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An organic base, especially one of a class of substances occurring ready formed in the tissues of plants and the bodies of animals.

Pertaining to, resembling, or containing, alkali.

An intensely poisonous alkaloid, extracted from aconite.

reddened litmus to blue. Fixed alkalies, potash and soda. -- Vegetable alkalies. Same as Alkaloids. -- Volatile alkali, ammonia, so called in distinction from the fixed alkalies.

An artificial alkaloid, believed to be efficient in abating fever.

An alkaloid, , prepared from codeine. In its effects it resembles apomorphine.

A crystalline alkaloid obtained from morphia. It is a powerful emetic.

An oily liquid substance, C8H13O2N, the chief alkaloid of the betel nut, to which the latter owes its anthelmintic action.

An alkaloid, first found in white cinchona bark.

An alkaloid obtained from the arnica plant.

A poisonous, white, crystallizable alkaloid, extracted from the Atropa belladonna, or deadly nightshade, and the Datura Stramonium, or thorn apple. It is remarkable for its power in dilating the pupil of the eye. Called also daturine.

An alkaloid got from the bark of the bebeeru, or green heart of Guiana (Nectandra Rodioei). It is a tonic, antiperiodic, and febrifuge, and is used in medicine as a substitute for quinine. [Written also bibirine.]

A tropical South American tree (Nectandra Rodioi), the bark of which yields the alkaloid bebeerine, and the wood of which is known as green heart.

t and leaves are used as powerful medicinal agents. Its properties are largely due to the alkaloid atropine which it contains. Called also deadly nightshade.

An alkaloid obtained, as a bitter, yellow substance, from the root of the barberry, gold thread, and other plants.

A poweful vegetable alkaloid, found, associated with strychnine, in the seeds of different species of Strychnos, especially in the Nux vomica. It is less powerful than strychnine. Called also brucia and brucina.

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

r the changes produced by death; cadaverous; as, cadaveric rigidity. Dunglison. Cadaveric alkaloid, an alkaloid generated by the processes of decomposition in dead animal bodies, and thought by some to be the cause of the poisonous effects produced by the bodies. See Ptomaine.

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

An alkaloid resembing physostigmine and occurring with it in the calabar bean.