Definitions of alkaloid

n natural bases containing nitrogen found in plants

show 18 types...
hide 18 types...
a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides
a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tract
cholinergic alkaloid used in eyedrops to treat glaucoma
hyoscine, scopolamine
an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures
used in treatment of Alzheimer's disease and glaucoma
an alkaloid derivative of the bark of cinchona trees that is used as an antimalarial drug
white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma
Ergotrate Maleate, ergonovine
an alkaloid derived from ergot (trade name Ergotrate Maleate) that is less toxic than ergot; induces muscular contraction of the uterus and is administered after childbirth or abortion
an alkaloid derived from ergot that is less toxic than ergot; causes constriction of blood vessels and is used to treat migraine
poisonous crystalline alkaloid occurring with ephedrine and isomorphic with it
an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide
an alkaloid plant toxin extracted chiefly from nux vomica; formerly used as a stimulant
a bitter alkaloid poison resembling strychnine and extracted from nux vomica
a sweet tasting alkaloid that occurs in sugar beets
caffein, caffeine
a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
any of several alkaloids extracted from the shrub Rauwolfia serpentina
curare, tubocurarine
a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles
an alkaloidal extract or tincture of the poisonous belladonna plant that is used medicinally
Type of:
organic compound
any compound of carbon and another element or a radical

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement.