metal

a metal of relatively high density (specific gravity greater than about 5) or of high relative atomic weight (especially one that is poisonous like mercury or lead)

a metal that is common and not considered precious

any metal that is resistant to corrosion or oxidation

a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia

a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits

a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography

a silvery ductile metallic element found primarily in bauxite

a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum

a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum

a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms

a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite

a soft silvery metallic element of the alkali earth group; found in barite

any of several compounds of barium

a radioactive transuranic element; discovered by bombarding americium with helium

a light strong brittle grey toxic bivalent metallic element

a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals

a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals

ion of calcium; a factor in the clotting of blood

a radioactive transuranic element; discovered by bombarding curium with alpha particles

a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group

a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal

a radioactive isotope of cesium used in radiation therapy

a hard brittle multivalent metallic element; resistant to corrosion and tarnishing

another word for chromium when it is used in dyes or pigments

a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition

a radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy

a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor

an impure form of copper having a black blistered surface

a radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei

a trivalent metallic element of the rare earth group; forms compounds that are highly magnetic

a radioactive transuranic element produced by bombarding plutonium with neutrons

a trivalent metallic element of the rare earth group; occurs with yttrium

a bivalent and trivalent metallic element of the rare earth group

a radioactive transuranic metallic element produced by bombarding plutonium with neutrons

a radioactive element of the alkali-metal group discovered as a disintegration product of actinium

a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group

a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores

a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons

a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds

a rare soft silvery metallic element; occurs in small quantities in sphalerite

a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium

a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood

a magnetic allotrope of iron; stable below 906 degrees centigrade

an allotrope of iron that is the same as alpha iron except that it is nonmagnetic; stable between 768 and 906 degrees centigrade

a nonmagnetic allotrope of iron that is the basis of austenite; stable between 906 and 1403 degrees centigrade

an allotrope of iron that is stable between 1403 degrees centigrade and the melting point (= 1532 degrees)

iron of high purity

an alloy of iron containing so much carbon that it is brittle and so cannot be wrought but must be shaped by casting

iron having a low carbon content that is tough and malleable and so can be forged and welded

iron that is coated with zinc to protect it from rust

crude iron tapped from a blast furnace

iron to be melted again and reworked

iron that has been cast or worked in structural shapes

a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth

a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey

unrefined lead that is hard because of the impurities it contains

a lead alloy that contains about 5% antimony

lead that is cast in pigs

a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals

a trivalent metallic element of the rare earth group; usually occurs in association with yttrium

a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)

a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals

a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures

a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel

a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium

a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium

a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite

a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

a former name for niobium

a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known

a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry

a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor

a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite

a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process

a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium

a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead

an intensely radioactive metallic element that occurs in minute amounts in uranium ores

a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum

a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum

a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite

a rare polyvalent metallic element of the platinum group; it is found associated with platinum

a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite

a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite

a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)

a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite

a radioactive isotope of strontium (with the mass number 90) that is present in the fallout from nuclear explosions; can be assimilated like calcium into bones

a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite

a crystalline metallic element not found in nature; occurs as one of the fission products of uranium

a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite

a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores

a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands

radioactive isotope of thorium with mass number 228

a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime

a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide

a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite

a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite

a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

a uranium isotope with mass number 235; capable of sustaining chain reactions

the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239

a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite

a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime

a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys

a bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs naturally as zinc sulphide in zinc blende

impure zinc containing about three percent lead and other impurities (especially in the form of ingots)

a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon

any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium)

any of the bivalent metals of group II of the periodic table (calcium or strontium or barium or magnesium or beryllium)

a metal of relatively high density (specific gravity greater than about 5) or of high relative atomic weight (especially one that is poisonous like mercury or lead)

an alloy that contains 75 per cent gold

an alloy that contains 87 per cent gold

alloy of copper and tin and zinc; used in imitation gold jewelry

trade name for an alloy used to make high-energy permanent magnets; contains aluminum and iron and nickel plus cobalt or copper or titanium

an alloy of mercury with another metal (usually silver) used by dentists to fill cavities in teeth; except for iron and platinum all metals dissolve in mercury and chemists refer to the resulting mercury mixtures as amalgams

an alloy with a low melting point and used as solder and in safety plugs and sprinkler fuses

an alloy of gold and silver

any of various alloys of tin with small amounts of other metals (especially lead)

an alloy of copper and zinc that is used in cheap jewelry to imitate gold

an alloy of copper and lead used especially for making large pots

an alloy (usually of lead and tin) used when melted to join two metal surfaces

solder that contains copper; melts at a relatively high temperature; used for brazing

a solder that contains silver

solder that melts at a relatively low temperature

a pale alloy of gold usually with platinum or nickel or palladium

an alloy of tin and lead and antimony used to make printing type

a strip of type metal used for spacing

an alloy (often of lead or tin base) used for bearings

an alloy of tin with some copper and antimony; a lining for bearings that reduces friction

an alloy similar to pewter

an alloy based on tungsten with cobalt or nickel as a binder; used in making metal-cutting tools

an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range

steel who characteristics are determined by the addition of other elements in addition to carbon

steel that has enough nickel and chromium or manganese to retain austenite at atmospheric temperatures

steel with a surface that is much harder than the interior metal

steel whose characteristics are determined by the amount of carbon it contains

steel made by the mixture of molten wrought iron, charcoal, and other substances in a crucible

a hard resilient steel often decorated and used for sword blades

steel used in making chisels

steel with more than 0.3% carbon

steel with 0.15-0.3% carbon

steel with less than 0.15% carbon

steel that has been hardened by immersing it in water or oil to cool it

a strong steel that is rolled into shapes that are used in construction

any alloy that fuses at low temperatures and can be used molding artificial teeth

any alloy whose principal component is copper

an alloy of copper and zinc

an alloy of copper and tin and sometimes other elements; also any copper-base alloy containing other elements in place of tin

a 60/40 alloy of copper and nickel

an alloy of copper and aluminum with high tensile strength and resistance to corrosion

an alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire

an alloy of gold used in dentistry

an aluminum-based alloy

a nickel-base alloy with chromium and iron; used in gas-turbine blades

an alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments

an alloy whose main constituent is nickel

an alloy of nickel and copper and other metals (such as iron and/or manganese and/or aluminum)

an alloy of nickel and chromium with high electrical resistance and an ability to withstand high temperatures; used for resistance heating elements

an 80/20 alloy of nickel and iron; easily magnetized and demagnetized

a silver-white alloy containing copper and zinc and nickel

an alloy that emits sparks when struck or scratched with steel; used in lighter flints

a pyrophoric alloy of iron with cerium; used for lighter flints

a pyrophoric alloy made from a mixture of rare-earth metals

an alloy that is 98% lead and 2% arsenic; used in making small shot

a very hard alloy of cobalt and chromium with cobalt as the principal ingredient; used to make cutting tools and for surfaces subject to heavy wear

a silver alloy with no more than 7.5% copper

an alloy of copper and zinc (and sometimes arsenic) used to imitate gold in cheap jewelry and for gilding

a fusible alloy that is half bismuth plus lead, tin, and cadmium; melts at about 160 degrees Fahrenheit