compound

Primary Meanings of compound

1.	n adj v	a whole formed by a union of two or more elements or parts composed of more than one part combine so as to form a whole; mix
2.	n	an enclosure of residences and other buildings (especially in the Orient)
3.	v	make more intense, stronger, or more marked
4.	v	calculate principal and interest

Full Definitions of compound

n a whole formed by a union of two or more elements or parts

Type of:: whole
all of something including all its component elements or parts

n (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

Synonyms:: chemical compound

Types:: show 362 types...; hide 362 types...; vanillin
a crystalline compound found in vanilla beans and some balsam resins; used in perfumes and flavorings; acceptor
(chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated; adduct
a compound formed by an addition reaction; antiknock
any of various compounds that are added to gasoline to reduce engine knocking; acid
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt; arsenide
a compound of arsenic with a more positive element; hydrogen cyanide
a highly poisonous gas or volatile liquid that smells like bitter almonds; becomes a gas at around 90 degree Fahrenheit and is most dangerous when inhaled; the anhydride of hydrocyanic acid; used in manufacturing; anionic compound
a compound characterized by an active anion; alkali, base
any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water; binary compound
chemical compound composed of only two elements; taurine
a colorless crystalline substance obtained from the bile of mammals; chromogen
a compound that can be converted to a pigment; manganese tetroxide
an oxide of manganese found naturally as hausmannite; monomer
a simple compound whose molecules can join together to form polymers; ozonide
any of a class of unstable chemical compounds resulting from the addition of ozone to a double bond in an unsaturated compound; organic compound
any compound of carbon and another element or a radical; ammine
a complex inorganic compound that contains ammonia molecules; anhydride
a compound formed from one or more other compounds in a reaction resulting in removal of water; azide
a chemical compound containing the azido group combined with an element or radical; bitter principle
any one of several hundred compounds having a bitter taste; not admitting of chemical classification; buffer
(chemistry) an ionic compound that resists changes in its pH; calcium-cyanamide, cyanamide
a compound used as a fertilizer and as a source of nitrogen compounds; carbonyl
a compound containing metal combined with carbon monoxide; carbon disulfide
a toxic colorless flammable liquid (CS2); used in the manufacture of rayon and cellophane and carbon tetrachloride and as a solvent for rubber; cofactor
a substance (as a coenzyme) that must join with another to produce a given result; cementite, iron carbide
a chemical compound that is a constituent of steel and cast iron; very hard and brittle; chloropicrin, nitrochloroform
a heavy colorless insoluble liquid compound that causes tears and vomiting; used as a pesticide and as tear gas; complex, coordination compound
a compound described in terms of the central atom to which other atoms are bound or coordinated; allomorph
any of several different crystalline forms of the same chemical compound; corrosive
a substance having the tendency to cause corrosion (such a strong acids or alkali); aluminate
a compound of alumina and a metallic oxide; defoliant
a chemical that is sprayed on plants and causes their leaves to fall off; depilatory
a chemical (usually a sulfide) used to remove hair or wool or bristles from hides; derivative
a compound obtained from, or regarded as derived from, another compound; dimer
a compound whose molecules are composed of two identical monomers; fixer, fixing agent
a chemical compound that sets or fixes something (as a dye or a photographic image); flavone
a colorless crystalline compound that is part of a number of white or yellow plant pigments; formulation, preparation
a substance prepared according to a formula; enantiomer, enantiomorph
either one of a pair of compounds (crystals or molecules) that are mirror images on each other but are not identical; exotherm
a compound that gives off heat during its formation and absorbs heat during its decomposition; goitrogen
any substance (such as thiouracil) that induces the formation of a goiter; benzofuran, coumarone, cumarone
a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins; synthetic, synthetic substance
a compound made artificially by chemical reactions; hydrate
any compound that contains water of crystallization; hydroxide
a chemical compound containing the hydroxyl group; incense
a substance that produces a fragrant odor when burned; inorganic compound
any compound that does not contain carbon; repellant, repellent
a chemical substance that repels animals; repellant, repellent
a compound with which fabrics are treated to repel water; iodocompound
a compound containing the covalent iodine radical; isomer
a compound that exists in forms having different arrangements of atoms but the same molecular weight; hydrated oxide, hydroxide
a compound of an oxide with water; menthol
a crystalline compound that has the cool and minty taste and odor that occurs naturally in peppermint oil; used as a flavoring and in medicine to relieve itching, pain, and nasal congestion; nitrogen mustard
a toxic compound resembling mustard gas in structure; important in cancer treatment; nitride
a compound containing nitrogen and a more electropositive element (such as phosphorus or a metal); oxide
any compound of oxygen with another element or a radical; polymer
a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers; preservative
a chemical compound that is added to protect against decay or decomposition; benzoquinone, quinone
any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes; salt
a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal); caustic
any chemical substance that burns or destroys living tissue; nitrate
any compound containing the nitrate group (such as a salt or ester of nitric acid); chloride
any compound containing a chlorine atom; heterocycle, heterocyclic, heterocyclic compound
a compound containing a heterocyclic ring; silicide
any of various compounds of silicon with a more electropositive element or radical; siloxane
any of a large class of compounds that have alternate silicon and oxygen atoms; solvate
a compound formed by solvation (the combination of solvent molecules with molecules or ions of the solute); sternutator, sternutatory
a chemical substance that causes sneezing and coughing and crying; stripper
a chemical compound used to remove paint or varnish; sulfide, sulphide
a compound of sulphur and some other element that is more electropositive; telluride
any binary compound of tellurium with other more electropositive elements; tenderiser, tenderizer
a substance (as the plant enzyme papain) applied to meat to make it tender; tetrachloride
any compound that contains four chlorine atoms per molecule; triazine
any of three isomeric compounds having three carbon and three nitrogen atoms in a six-membered ring; U308, yellowcake
an impure mixture of uranium oxides obtained during the processing of uranium ore; enamel
a colored glassy compound (opaque or partially opaque) that is fused to the surface of metal or glass or pottery for decoration or protection; pregnanediol
a compound found in women's urine during certain phases of the menstrual cycle and in the urine of pregnant women; cleaner, cleanser, cleansing agent
a preparation used in cleaning something; aldehyde
any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids; alcapton, alkapton, homogentisic acid
an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine; Plasticine
a synthetic material resembling clay but remaining soft; used as a substitute for clay or wax in modeling (especially in schools); acetate, ethanoate
a salt or ester of acetic acid; lead tetraethyl, tetraethyl lead
a clear oily poisonous liquid added to gasoline to prevent knocking; aliphatic compound
organic compound that is an alkane or alkene or alkyne or their derivative; alkylbenzene
organic compound that has an alkyl group bound to a benzene ring; alkyl halide, haloalkane
organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkane; amino acid, aminoalkanoic acid
organic compounds containing an amino group and a carboxylic acid group; citrate
a salt or ester of citric acid; diamine
any organic compound containing two amino groups; enol
an organic compound that contains a hydroxyl group bonded to a carbon atom which in turn is doubly bonded to another carbon atom; arsenate
a salt or ester of arsenic acid; arsenic acid
an acid formed from arsenic pentoxide; cerotic acid, hexacosanoic acid
a white solid fatty acid found in waxes (such as beeswax); chlorate
any salt of chloric acid; chloric acid
(HClO3) a strong unstable acid with an acrid odor found in chlorate salts; chlorous acid
(HClO2) a strongly oxidizing acid; known only in solution; monobasic acid
an acid containing only one replaceable hydrogen atom per molecule; dibasic acid
an acid containing two replaceable hydrogen atoms per molecule; dibasic salt
a salt derived by replacing two hydrogen atoms per molecule; tribasic acid
an acid containing three replaceable hydrogen atoms per molecule; tetrabasic acid
an acid containing four replaceable hydrogen atoms per molecule; fulminic acid
(CNOH) an unstable acid occurring mainly in the form of explosive salts and esters that is isomeric with cyanic acid; gamma acid
a crystalline acid used to make azo dyes; hydriodic acid
(HI) a colorless or yellow aqueous solution of hydrogen iodide; hydrocyanic acid, prussic acid
a solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds; hydroxy acid
any acid that has hydroxyl groups in addition to the hydroxyl group in the acid itself; hypochlorite
any salt or ester of hypochlorous acid; hyponitrous acid
an explosive white crystalline weak acid (H2N2O2); lysergic acid
a crystalline acid often used in medical research; obtained from ergotic alkaloids; manganic acid
a dibasic acid (H2MnO4) found only in solution and in manganate salts; pyrophosphate
a salt or ester of pyrophosphoric acid; 2-methylpropenoic acid, methacrylic acid
an unsaturated acid (C4H6O2) used to make resins and plastics; selenic acid
a strong acid (H2SeO4) analogous to sulfuric acid; sulfonate
a salt of sulphonic acid; sulfonic acid, sulphonic acid
an acid derived from sulphuric acid; titanic acid
a white weak acid that is a hydrated form of titanium dioxide; titania, titanic oxide, titanium dioxide, titanium oxide
a white powder used as a pigment for its high covering power and durability; chelate, chelate compound
a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions; halon
a compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atoms; very stable; used in fire extinguishers although it is thought to release bromine that depletes the ozone layer; phosphor
a synthetic substance that is fluorescent or phosphorescent; used to coat the screens of cathode ray tubes; common salt, sodium chloride
a white crystalline solid consisting mainly of sodium chloride (NaCl); lactate
a salt or ester of lactic acid; perchlorate
a salt of perchloric acid; perchloric acid
a powerful oxidizing agent; forms perchlorates; pentoxide
an oxide containing five atoms of oxygen in the molecule; peptone
any of various water-soluble compounds that form by hydrolysis in the digestion of proteins to amino acids; quaternary ammonium compound
a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface-active agents, disinfectants, and in drugs; proenzyme, zymogen
any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active; propylthiouracil
a crystalline compound used as an antithyroid drug in the treatment of goiter; pyridine
a toxic colorless flammable liquid organic base with a disagreeable odor; usually derived from coal; pyrites
any of various metallic-looking sulfides (of which pyrite is the commonest); purine
a colorless crystalline organic base containing nitrogen; the parent compound of various biologically important substances; purine
any of several bases that are derivatives of purine; ether
any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom; acetal
any organic compound formed by adding alcohol molecules to aldehyde molecules; aldehyde-alcohol, aldol
an oily colorless liquid obtained by the condensation of two molecules of acetaldehyde; contains an alcohol group (-OH) and an aldehyde group (-CHO); alkali
a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture; alkaloid
natural bases containing nitrogen found in plants; amide
any organic compound containing the group -CONH2; rennet
a substance that curdles milk in making cheese and junket; azadirachtin
insecticide; carboxylic acid
an organic acid characterized by one or more carboxyl groups; aminobenzoic acid
a derivative of benzoic acid; ammonia
a pungent gas compounded of nitrogen and hydrogen (NH3); ammonium chloride, sal ammoniac
a white salt used in dry cells; stercobilinogen, urobilinogen
a chromogen formed in the intestine from the breakdown of bilirubin; yields urobilins on oxidation; some is excreted in the feces and some is resorbed and excreted in bile or urine; aqua fortis, nitric acid
acid used especially in the production of fertilizers and explosives and rocket fuels; nitrous acid
an unstable inorganic acid known only in solution and as nitrite salts; nitrogen oxide
any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials; present in car exhausts; aqua regia, nitrohydrochloric acid
a yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold); acetic anhydride
a compound that is needed in order to refine opium into heroin; phthalic anhydride
a white cyclic anhydride; hydrazoite
a salt of hydrazoic acid; thiazine
a compound made up of a ring of four carbon atoms and one sulfur atom and one nitrogen atom; barbituric acid, malonylurea
a white crystalline acid derived from pyrimidine; used in preparing barbiturate drugs; benzoate
any salt or ester of benzoic acid; Prevacid, lansoprazole
antacid (trade name Prevacid) that suppresses acid secretion in the stomach; borate
a salt or ester of boric acid; boracic acid, boric acid
any of various acids containing boron and oxygen; boric acid, orthoboric acid
a white or colorless slightly acid solid that is soluble in water and ethanol; used in the manufacture of glass and paper and adhesives and in detergents and as a flux in welding; also used as an antiseptic and food preservative; borosilicate
a salt of boric and silicic acids; bromic acid
an unstable acid used as an oxidizing agent; cacodyl, tetramethyldiarsine
a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups; undergoes spontaneous combustion in dry air; calcium carbide
a grey salt of calcium (CaC) used in making acetylene; calcium lactate
a white crystalline salt made by the action of lactic acid on calcium carbonate; used in foods (as a baking powder) and given medically as a source of calcium; calcium nitrate
a deliquescent salt that is soluble in water; sometimes used as a source of nitrogen in fertilizers; burnt lime, calcined lime, calcium oxide, calx, fluxing lime, lime, quicklime, unslaked lime
a white crystalline oxide used in the production of calcium hydroxide; calcium octadecanoate, calcium stearate
an insoluble calcium salt of stearic acid and palmitic acid; it is formed when soap is mixed with water that contains calcium ions and is the scum produced in regions of hard water; carbamate
a salt (or ester) of carbamic acid; carbamic acid
an acid that is known only by virtue of its salts (as ammonium carbamate) or its esters (as urethane); carbide
a binary compound of carbon with a more electropositive element; cellulose nitrate, guncotton, nitrocellulose, nitrocotton
a nitric acid ester; used in lacquers and explosives; carbolic acid, hydroxybenzene, oxybenzene, phenol, phenylic acid
a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally; carbon tet, carbon tetrachloride, perchloromethane, tetrachloromethane
a colorless nonflammable liquid used as a solvent for fats and oils; because of its toxicity its use as a cleaning fluid or fire extinguisher has declined; carbonate
a salt or ester of carbonic acid (containing the anion CO3); fulminate
a salt or ester of fulminic acid; carbonic acid
a weak acid known only in solution; formed when carbon dioxide combines with water; neurochemical
any organic substance that occurs in neural activity; acid anhydrides, acyl anhydrides
organic compounds that react with water to form an acid; acid halide, acyl halide
organic compounds containing the group -COX where X is a halogen atom; chromic acid
an unstable acid known only in solution and as chromate salts; chromate
any salt or ester of chromic acid; citric acid
a weak water-soluble acid found in many fruits (especially citrus fruits); used as a flavoring agent; hydrochloride
a complex consisting of an organic base in association with hydrogen chloride; copper oxide
an oxide of copper; aluminium hydroxide, aluminum hydroxide, hydrated aluminium oxide, hydrated aluminum oxide
white crystalline compound that occurs naturally as the mineral gibbsite; coal-tar creosote, creosote
a dark oily liquid obtained by distillation of coal tar; used as a preservative for wood; creosote
a colorless or yellowish oily liquid obtained by distillation of wood tar; used as an antiseptic; cyanamid, cyanamide
a weak soluble dibasic acid (the parent acid of cyanamide salts); cyanic acid
a colorless poisonous volatile liquid acid that hydrolyzes readily to ammonia and carbon dioxide; cyanide
an extremely poisonous salt of hydrocyanic acid; cyanide, nitril, nitrile
any of a class of organic compounds containing the cyano radical -CN; cyanohydrin
any organic compound in which the cyano radical -CN and the hydroxyl radical -OH are attached to the same carbon atom; cyanuric acid
a trimer of cyanic acid; DNA, deoxyribonucleic acid, desoxyribonucleic acid
(biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; RNA, ribonucleic acid
(biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; dioxide
an oxide containing two atoms of oxygen in the molecule; H2O, water
binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent; ester
formed by reaction between an acid and an alcohol with elimination of water; soda niter, sodium nitrate
(NaNO3) used especially as a fertilizer and explosive; niter, nitre, potassium nitrate, saltpeter, saltpetre
(KNO3) used especially as a fertilizer and explosive; potassium bromide
a white crystalline salt (KBr) used as a sedative and in photography; potassium chlorate
a white salt (KClO3) used in matches, fireworks, and explosives; also used as a disinfectant and bleaching agent; potassium dichromate
an orange-red salt used in making dyes and in photography; ferric oxide
a red oxide of iron; ferricyanic acid
a brown unstable acid formed from ferricyanide; ferricyanide
salt of ferricyanic acid obtained by oxidation of a ferrocyanide; ferrocyanic acid
a white unstable acid formed from ferrocyanide salts; ferrocyanide
salt of ferrocyanic acid usually obtained by a reaction of a cyanide with iron sulphate; fixative
a compound (such as ethanol or formaldehyde) that fixes tissues and cells for microscopic study; fluoroboric acid
an acid of fluorine and boron; fluoroboride
a salt of fluoroboric acid; fluosilicate
salt of fluosilicic acid; fluosilicic acid, hydrofluosilicic acid
an unstable poisonous corrosive acid known primarily in the form of its salts; formic acid
a colorless pungent fuming vesicatory liquid acid HCOOH found naturally in ants and many plants or made catalytically from carbon monoxide and steam; used in finishing textiles and paper and in the manufacture of insecticides and fumigants; fumaric acid
a colorless crystalline acid with a fruity taste; used in making polyester resins; furan, furane, furfuran
a colorless toxic flammable liquid used in the synthesis of nylon; gallic acid
a colorless crystalline acid obtained from tannin; glutamate
a salt or ester of glutamic acid; glyceric acid
a syrupy acid obtained by oxidation of glycerol or glyceraldehyde; glycerinated gelatin
a gelatinous preparation made from gelatin and glycerin and water; used as a base for ointments and suppositories; Nitrospan, Nitrostat, glyceryl trinitrate, nitroglycerin, nitroglycerine, trinitroglycerin
a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a vasodilator (trade names Nitrospan and Nitrostat); glycoside
a group of compounds derived from monosaccharides; glycolic acid, glycollic acid, hydroxyacetic acid
a translucent crystalline compound found in sugar cane and sugar beets and unripe grapes; resin, rosin
any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules; synthetic resin
a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics; copolymer
a polymer consisting of two or more different monomers; polyurethan, polyurethane
any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber; halide
a salt of any halogen acid; halocarbon
one of various compounds of carbon and any of the halogens; hemiacetal
an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones; erythrocytolysin, erythrolysin, haemolysin, hemolysin
any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin; humic substance
an organic residue of decaying organic matter; hydride
any binary compound formed by the union of hydrogen and other elements; hydrobromic acid
an aqueous solution of hydrogen bromide that is a strong liquid acid; hydrocarbon
an organic compound containing only carbon and hydrogen; chlorohydric acid, hydrochloric acid
an aqueous solution of hydrogen chloride; a strongly corrosive acid; hydrogen chloride
a colorless corrosive gas (HCl); hydrofluoric acid
a weak poisonous liquid acid; formed by solution of hydrogen fluoride in water; hydroiodic acid
an acid formed by aqueous solution of hydrogen iodide; hydrogen sulfide
a sulfide having the unpleasant smell of rotten eggs; hypo, sodium thiosulfate, sodium thiosulphate
a compound used as a fixing agent in photographic developing; hypochlorous acid
a weak unstable acid known only in solution and in its salts; used as a bleaching agent and as an oxidizing agent; glyoxaline, imidazole, iminazole
an organic base C3H4N2; a histamine inhibitor; insect repellant, insect repellent, insectifuge
a chemical substance that repels insects; iodic acid
a soluble crystalline acid; used as a reagent and disinfectant; iron disulfide
a compound containing two atoms of sulfur combined with iron; isocyanate
a salt or ester of isocyanic acid; isocyanic acid
an acid known only in the form of its esters; itaconic acid
a crystalline carboxylic acid; occurs in some fermentations of sugars; joss stick
a slender stick of incense burned before a joss by the Chinese; ketone
any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals; lignin
a complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants; calcium hydrate, calcium hydroxide, caustic lime, hydrated lime, lime, lime hydrate, slaked lime
a caustic substance produced by heating limestone; calcium chloride
a deliquescent salt; used in de-icing and as a drying agent; calcium sulfate, calcium sulphate
a white salt (CaSO4); lye
a strong solution of sodium or potassium hydroxide; macromolecule, supermolecule
any very large complex molecule; found only in plants and animals; magnesium hydroxide
a white crystalline powder used chiefly in medicines; magnesium nitride
a nitride containing nitrogen and magnesium; maleic acid
a colorless crystalline compound found in unripe fruit (such as apples or tomatoes or cherries) and used mainly to make polyester resins; manganate
a salt of manganic acid containing manganese as its anion; cyanuramide, melamine
a white crystalline organic base; used mainly in making melamine resins; calomel, mercurous chloride
a tasteless colorless powder used medicinally as a cathartic; monohydrate
a hydrate that contains one molecule of water per molecule of the compound; monoxide
an oxide containing just one atom of oxygen in the molecule; chrome alum
a violet-colored salt used in hide tanning and as a mordant in dyeing; tartrate
a salt or ester of tartaric acid; nebula
a medicinal liquid preparation intended for use in an atomizer; nitrobenzene
a poisonous oily water-soluble liquid used as a solvent and in the manufacture of aniline; polyamide, polymeric amide
a polymer containing repeated amide groups; oxalacetate, oxaloacetate
a salt or ester of oxalacetic acid; oxalacetic acid, oxaloacetic acid
an acid formed by oxidation of maleic acid (as in metabolism of fats and carbohydrates); oxalate
a salt or ester of oxalic acid; ethanedioic acid, oxalic acid
a toxic colorless crystalline organic acid found in oxalis and other plants; used as a bleach and rust remover and in chemical analysis; oxime
any compound containing the group -C=NOH; oxyacid, oxygen acid
any acid that contains oxygen; pantothen, pantothenic acid
a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods; PABA, para aminobenzoic acid
a metabolic acid found in yeast and liver cells; used to make dyes and drugs and sun blockers; pectic acid
a complex acid that occurs in ripe fruit and some vegetables; permanganate
a dark purple salt of permanganic acid; in water solution it is used as a disinfectant and antiseptic; permanganic acid
an unstable purple acid (HMnO4) known only in solution or of permanganate salts; peroxide
an inorganic compound containing the divalent ion -O-O-; petrochemical
any compound obtained from petroleum or natural gas; inorganic phosphate, orthophosphate, phosphate
a salt of phosphoric acid; creatine phosphate, creatine phosphoric acid, phosphocreatine
an organic compound of creatine and phosphoric acid; found in the muscles of vertebrates where its hydrolysis releases energy for muscular contraction; phthalic acid
a colorless acid used to make dyes and perfumes; picric acid
a yellow toxic highly explosive strong acid; used in high explosives and as a dye and in chemical reactions; phenol
any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups; polyphosphate
a salt or ester of polyphosphoric acid; polish
a preparation used in polishing; caustic potash, potash, potassium hydroxide
a potassium compound often used in agriculture and industry; acrylate, propenoate
a salt or ester of propenoic acid; pyrimidine
a heterocyclic organic compound with a penetrating odor; pyrimidine
any of several basic compounds derived from pyrimidine; pyruvic acid
a colorless acid formed as an important intermediate in metabolism or fermentation; quassia
a bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood and bark of trees of the genera Quassia and Picrasma; minium, red lead
a reddish oxide of lead (Pb3O4) used as a pigment in paints and in glass and ceramics; rubber, synthetic rubber
any of various synthetic elastic materials whose properties resemble natural rubber; salicylate
a salt of salicylic acid (included in several commonly used drugs); double salt
a solution of two simple salts that forms a single substance on crystallization; bile salt
a salt of bile acid and a base; functions as an emulsifier of lipids and fatty acids; Glauber's salt, Glauber's salts
(Na2SO4.10H2O) a colorless salt used as a cathartic; cream of tartar, potassium bitartrate, potassium hydrogen tartrate, tartar
a salt used especially in baking powder; sodium chlorate
a colorless salt (NaClO3) used as a weed killer and an antiseptic; dichromic acid
the hypothetical acid (H2Cr2O7) from which dichromates are derived; known only in solution and in the form of dichromate salts; bichromate, dichromate
a salt of the hypothetical dichromic acid; sodium bichromate, sodium dichromate
a red-orange salt used as a mordant; ammonium nitrate
used as an explosive and fertilizer and rocket propellant; silver nitrate
a nitrate used in making photographic emulsions; also used in medicine as a cautery and as a topical antibacterial agent; caustic soda, sodium hydroxide
a strongly alkaline caustic used in manufacturing soap and paper and aluminum and various sodium compounds; microcosmic salt
a white salt present in urine and used to test for metal oxides; trichloride
any compound containing three chlorine atoms in each molecule; bichloride, dichloride
a compound containing two chlorine atoms per molecule; perchloride
a chloride containing an unusually high proportion of chlorine; aluminium chloride, aluminum chloride
a chloride used as a wood preservative or catalyst; dichloromethane, methylene chloride
a nonflammable liquid used as a solvent and paint remover and refrigerant; obidoxime chloride
a chloride used as an antidote for nerve gases such as sarin or VX; silver chloride
a chloride used chiefly in the manufacture of photographic emulsions; stannic chloride
a colorless caustic liquid made by treating tin with chlorine; starch
a commercial preparation of starch that is used to stiffen textile fabrics in laundering; hemin, protohemin
a reddish-brown chloride of heme; produced from hemoglobin in laboratory tests for the presence of blood; silicic acid
a jellylike substance (hydrated silica); silicate
a salt or ester derived from silicic acid; silicone, silicone polymer
any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation; silica, silicon dioxide, silicon oxide
a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite; smelling salts
a pungent preparation of ammonium carbonate and perfume; sniffed as a stimulant to relieve faintness; sal soda, soda, soda ash, sodium carbonate, washing soda
a sodium salt of carbonic acid; used in making soap powders and glass and paper; sodium carboxymethyl cellulose
a gummy substance that is a sodium salt of carboxymethyl cellulose; used as a thickening or emulsifying agent; sodium fluoride
a colorless crystalline salt of sodium (NaF) used in fluoridation of water and to prevent tooth decay; spice
aromatic substances of vegetable origin used as a preservative; steroid
any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects; nonsteroid, nonsteroidal
an organic compound that does no contain a steroid; sulfanilic acid, sulphanilic acid
a crystalline acid made from aniline and used as a dye; sulfate, sulphate
a salt or ester of sulphuric acid; sulfur oxide, sulphur oxide
any of several oxides of sulphur; superoxide
a metallic oxide containing the univalent anion O2-; tetroxide
an oxide containing four atoms of oxygen in the molecule; thiouracil
depresses the function of the thyroid gland; thiocyanate
a salt of thiocyanic acid; formed when alkaline cyanides are fused with sulfur; thiocyanic acid
an unstable acid that can be obtained by distilling a thiocyanate salt; toluic acid
an isomeric acid derived from toluene; trimer
a polymer (or a molecule of a polymer) consisting of three identical monomers; trioxide
an oxide containing three atoms of oxygen in the molecule; triphosphoric acid
an acid that is a partial anhydride of three molecules of phosphoric acid; known chiefly in the form of its salts and esters; tungstate
a salt of tungstic acid; coenzyme Q, ubiquinone
any of several quinones found in living cells and that function as coenzymes that transfer electrons from one molecule to another in cell respiration; undecylenic acid
an acid that is a component of perspiration; uranyl nitrate
a yellow salt obtained by the reaction of uranium salts with nitric acid; carbamide, urea
the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics; uric acid
a white tasteless odorless crystalline product of protein metabolism; found in the blood and urine; urate
a salt of uric acid; vanadate
a salt or ester of vanadic acid; an anion containing pentavalent vanadium; oil of vitriol, sulfuric acid, sulphuric acid, vitriol
(H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry; cadmium sulfide
a yellow sulfide used chiefly as a pigment; flowers of zinc, philosopher's wool, philosophers' wool, zinc oxide
oxide of zinc; a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment; zinc sulfide, zinc sulphide
a yellow to white crystalline fluorescent compound that occurs naturally as sphalerite or wurtzite and is used as a luminous pigment; zirconia, zirconium dioxide, zirconium oxide
a white crystalline oxide; used in refractories and in insulation and abrasives and enamels and glazes; imide
any of a class of organic compounds that contain the divalent radical -CONHCO-; xanthate
a salt or ester of xanthic acid; xanthic acid
any of a class of unstable organic acids containing sulphur; xanthine
crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine

Type of:: chemical, chemical substance
material produced by or used in a reaction involving changes in atoms or molecules

adj composed of more than one part

“compound leaves are composed of several lobes”

“compound flower heads”

Synonyms:: bilobate, bilobated, bilobed
having two lobes; binate
growing in two parts or in pairs; bipartite
divided into two portions almost to the base; bipinnate
of a leaf shape; having doubly pinnate leaflets (as ferns); bipinnatifid
pinnatifid with the segments also pinnatifid; cleft, dissected
having one or more incisions reaching nearly to the midrib; conjugate
(of a pinnate leaflet) having only one pair of leaflets; decompound
of a compound leaf; consisting of divisions that are themselves compound; abruptly-pinnate, even-pinnate, paripinnate
(of a leaf shape) pinnate with a pair of leaflets at the apex; incised
sharply and deeply indented; lobate, lobed
having deeply indented margins but with lobes not entirely separate from each other; imparipinnate, odd-pinnate
(a leaf shape) pinnate with a single leaflet at the apex; palm-shaped, palmate
of a leaf shape; having leaflets or lobes radiating from a common point; palmatifid
of a leaf shape; palmately cleft rather than lobed; parted
having a margin incised almost to the base so as to create distinct divisions or lobes; pedate
of a leaf shape; having radiating lobes, each deeply cleft or divided; pinnate, pinnated
(of a leaf shape) featherlike; having leaflets on each side of a common axis; pinnatifid
(of a leaf shape) cleft nearly to the midrib in broad divisions not separated into distinct leaflets; pinnatisect
(of a leaf shape) cleft nearly to the midrib in narrow divisions not separated into distinct leaflets; quinquefoliate
(of a leaf shape) having five leaflets; radiate
having rays or ray-like parts as in the flower heads of daisies; ternate
(of a leaf shape) consisting of three leaflets or sections; trifoliate, trifoliated, trifoliolate
(of a leaf shape) having three leaflets; three-lobed, trilobate, trilobated, trilobed
(of a leaf shape) divided into three lobes; tripinnate, tripinnated
(of a leaf shape) thrice pinnate; tripinnatifid
(of a leaf shape) bipinnatifid with segments pinnatifid; complex
complicated in structure; consisting of interconnected parts; smooth
of the margin of a leaf shape; not broken up into teeth; rough
of the margin of a leaf shape; having the edge cut or fringed or scalloped

Antonyms:: simple, unsubdivided
(botany) of leaf shapes; of leaves having no divisions or subdivisions; acerate, acerose, acicular, needle-shaped
narrow and long and pointed; as pine leaves; acuminate
(of a leaf shape) narrowing to a slender point; apiculate
(of a leaf shape) having a short sharply pointed tip; caudate
(of a leaf shape) tapering gradually into a long taillike tip; cordate, cordiform, heart-shaped
(of a leaf) shaped like a heart; cuneate, wedge-shaped
(of a leaf shape) narrowly triangular, wider at the apex and tapering toward the base; deltoid
triangular or suggesting a capital delta, with a point at the apex; dolabrate, dolabriform
having the shape of the head of an ax or cleaver; elliptic
(of a leaf shape) in the form of an ellipse; bladelike, ensiform, sword-shaped, swordlike
shaped like a sword blade; hastate, spearhead-shaped
(of a leaf shape) like a spear point, with flaring pointed lobes at the base; lancelike, lanceolate
(of a leaf shape) shaped like a lance head; narrow and tapering to a pointed apex; elongate, linear
(of a leaf shape) long and narrow; lyrate
(of a leaf shape) having curvature suggestive of a lyre; needled
of trees whose leaves are acerate; two-needled
(of conifers) having two needles; three-needled
(of conifers) having three needles; four-needled
(of conifers) having four needles; five-needled
(of conifers) having five needles; obtuse
(of a leaf shape) rounded at the apex; oblanceolate
(of a leaf shape) having a broad rounded apex and a tapering base; oblong
(of a leaf shape) having a somewhat elongated form with approximately parallel sides; obovate
(of a leaf shape) egg-shaped with the narrower end at the base; orbicular, orbiculate
circular or nearly circular; ovate
of a leaf shape; egg-shaped with the broader end at the base; fiddle-shaped, pandurate, panduriform
(of a leaf shape) having rounded ends and a contracted center; peltate, shield-shaped
(of a leaf shape) round, with the stem attached near the center of the lower surface rather than the margin (as a nasturtium leaf for example); perfoliate
(of a leaf) having the base united around (and apparently pierced by) the stem; kidney-shaped, reniform
(of a leaf or bean shape) resembling the shape of kidney; arrow-shaped, sagittate, sagittiform
(of a leaf shape) like an arrow head without flaring base lobes; spatula-shaped, spatulate
(of a leaf shape) having a broad rounded apex and a narrow base; unlobed
without lobes; simple
having few parts; not complex or complicated or involved; smooth
of the margin of a leaf shape; not broken up into teeth; show more antonyms...

adj consisting of two or more substances or ingredients or elements or parts

“soap is a compound substance”

“housetop is a compound word”

“a blackberry is a compound fruit”

Synonyms:: complex
complicated in structure; consisting of interconnected parts

adj composed of many distinct individuals united to form a whole or colony

Synonyms:: colonial

: complex
complicated in structure; consisting of interconnected parts

v combine so as to form a whole; mix

“compound the ingredients”

Synonyms:: combine

Types:: show 8 types...; hide 8 types...; incorporate, integrate
make into a whole or make part of a whole; heterodyne
combine (a radio frequency wave) with a locally generated wave of a different frequency so as to produce a new frequency equal to the sum or the difference between the two; sulfurette, sulphurette
combine with sulfur; carburet
combine with carbon; fold
incorporate a food ingredient into a mixture by repeatedly turning it over without stirring or beating; reintegrate
integrate again; build in
make something an integral part of something else; re-incorporate
incorporate again or anew

Type of:: amalgamate, commix, mingle, mix, unify
to bring or combine together or with something else

v put or add together

Synonyms:: combine

Types:: show 4 types...; hide 4 types...; totalise, totalize
make into a total; recombine
to combine or put together again; mix
combine (electronic signals); synthesise, synthesize
combine so as to form a more complex, product

Type of:: add
make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of

v create by mixing or combining

Type of:: assemble, piece, put together, set up, tack, tack together
create by putting components or members together

n an enclosure of residences and other buildings (especially in the Orient)

Type of:: enclosure
a structure consisting of an area that has been enclosed for some purpose

v make more intense, stronger, or more marked

Synonyms:: deepen, heighten, intensify

Types:: show 8 types...; hide 8 types...; heat up, hot up, screw up
make more intense; fan
make (an emotion) fiercer; enhance, heighten, raise
increase; amplify
increase the volume of; sharpen
make crisp or more crisp and precise; heighten, sharpen
make (one's senses) more acute; potentiate
increase the effect of or act synergistically with (a drug or a physiological or biochemical phenomenon); subtilise, subtilize
make (senses) more keen

Type of:: increase
become bigger or greater in amount

v calculate principal and interest

Type of:: account, calculate
keep an account of