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Quinoidine :: Quinoidine (n.) A brownish resinous substance obtained as a by-product in the treatment of cinchona bark. It consists of a mixture of several alkaloids.

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

Alkaloid :: Alkaloid (a.) Alt. of Alkaloida.

Caffeine :: Caffeine (n.) A white, bitter, crystallizable substance, obtained from coffee. It is identical with the alkaloid theine from tea leaves, and with guaranine from guarana..

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

Thalline :: Thalline (n.) An artificial alkaloid of the quinoline series, obtained as a white crystalline substance, C10H13NO, whose salts are valuable as antipyretics; -- so called from the green color produced in its solution by certain oxidizing agents..

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

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

Tropic :: Tropic (a.) Of, pertaining to, or designating, an acid obtained from atropine and certain other alkaloids, as a white crystalline substance slightly soluble in water..

Harmaline :: Harmaline (n.) An alkaloid found in the plant Peganum harmala. It forms bitter, yellow salts..

Buxine :: Buxine (n.) An alkaloid obtained from the Buxus sempervirens, or common box tree. It is identical with bebeerine; -- called also buxina..

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..

Pyrethrine :: Pyrethrine (n.) An alkaloid extracted from the root of the pellitory of Spain (Anacyclus pyrethrum).

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..

Hyoscine :: Hyoscine (n.) An alkaloid found with hyoscyamine (with which it is also isomeric) in henbane, and extracted as a white, amorphous, semisolid substance..

Sabadilla :: Sabadilla (n.) A Mexican liliaceous plant (Schoenocaulon officinale); also, its seeds, which contain the alkaloid veratrine. It was formerly used in medicine as an emetic and purgative..

Lupuline :: Lupuline (n.) An alkaloid extracted from hops as a colorless volatile liquid.

Opianine :: Opianine (n.) An alkaloid found in small quantity in opium. It is identical with narcotine.

Hyoscyamine :: Hyoscyamine (n.) An alkaloid found in henbane (Hyoscyamus niger), and regarded as its active principle. It is also found with other alkaloids in the thorn apple and deadly nightshade. It is extracted as a white crystalline substance, with a sharp, offensive taste. Hyoscyamine is isomeric with atropine, is very poisonous, and is used as a medicine for neuralgia, like belladonna. Called also hyoscyamia, duboisine, etc..

Solanicine :: Solanicine (n.) An alkaloid produced by the action of hydrochloric acid on solanidine, as a tasteless yellow crystalline substance..

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