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Colchicine :: Colchicine (n.) A powerful vegetable alkaloid, C17H19NO5, extracted from the Colchicum autumnale, or meadow saffron, as a white or yellowish amorphous powder, with a harsh, bitter taste; -- called also colchicia..

Nicotine :: Nicotine (n.) An alkaloid which is the active principle of tobacco. It is a colorless, transparent, oily liquid, having an acrid odor, and an acrid burning taste. It is intensely poisonous..

Ergotine :: Ergotine () A powerful astringent alkaloid extracted from ergot as a brown, amorphous, bitter substance. It is used to produce contraction of the uterus..

Meconin :: Meconin (n.) A substance regarded as an anhydride of meconinic acid, existing in opium and extracted as a white crystalline substance. Also erroneously called meconina, meconia, etc., as though it were an alkaloid..

Antipyrine :: Antipyrine (n.) An artificial alkaloid, believed to be efficient in abating fever..

Sinapine :: Sinapine (n.) An alkaloid occuring in the seeds of mustard. It is extracted, in combination with sulphocyanic acid, as a white crystalline substance, having a hot, bitter taste. When sinapine is isolated it is unstable and undergoes decomposition..

Pilocarpine :: Pilocarpine (n.) An alkaloid extracted from jaborandi (Pilocarpus pennatifolius) as a white amorphous or crystalline substance which has a peculiar effect on the vasomotor system.

Aricine :: Aricine (n.) An alkaloid, first found in white cinchona bark..

Laburnine :: Laburnine (n.) A poisonous alkaloid found in the unripe seeds of the laburnum.

Lanthopine :: Lanthopine (n.) An alkaloid found in opium in small quantities, and extracted as a white crystalline substance..

Emetine :: Emetine (n.) A white crystalline bitter alkaloid extracted from ipecacuanha root, and regarded as its peculiar emetic principle..

Kairine :: Kairine (n.) A pale buff or white crystalline alkaloid derived from quinoline, and used as an antipyretic in medicine..

Alkaloidal :: Alkaloidal (a.) Pertaining to, resembling, or containing, alkali..

Cinchonidine :: Cinchonidine (n.) One of the quinine group of alkaloids, found especially in red cinchona bark. It is a white crystalline substance, C19H22N2O, with a bitter taste and qualities similar to, but weaker than, quinine; -- sometimes called also cinchonidia..

Dispoline :: Dispoline (n.) One of several isomeric organic bases of the quinoline series of alkaloids.

Ecboline :: Ecboline (n.) An alkaloid constituting the active principle of ergot; -- so named from its power of producing abortion.

Hygrine :: Hygrine (n.) An alkaloid associated with cocaine in coca leaves (Erythroxylon coca), and extracted as a thick, yellow oil, having a pungent taste and odor..

Verine :: Verine (n.) An alkaloid obtained as a yellow amorphous substance by the decomposition of veratrine.

Juglandine :: Juglandine (n.) An alkaloid found in the leaves of the walnut (Juglans regia).

Physostigmine :: Physostigmine (n.) An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called eserine, with which it was regarded as identical..

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