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n. Any of various organic compounds normally with basic chemical properties and usually containing at least one nitrogen atom in a heterocyclic ring, occurring chiefly in many vascular plants and some fungi. Many alkaloids, such as nicotine, quinine, cocaine, and morphine, are known for their poisonous or medicinal attributes.

n. Any of many organic heterocyclic bases, that occur in nature and often have medicinal properties.

adj. Relating to, resembling, or containing alkali.

adj. Pertaining to, resembling, or containing, alkali.

adj. of or pertaining to alkaloids.

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

n. A body resembling an alkali in properties; one of a class of nitrogenous compounds which occur in plants in combination with organic acids, and are sometimes called the organic bases of plants, as morphine, nicotine, quinine, etc.

Relating to or containing alkali.

n. natural bases containing nitrogen found in plants

"Aconite root contains about 0.4 per cent. of alkaloid and one-fifteenth of a grain of the alkaloid is a lethal dose."

alkaloidal   

organic compound   

animal alkaloid    synthetic alkaloid    artificial alkaloid    putrefactive alkaloid   

morphine    codeine    nicotine    lysergic acid    meperidine    ergotamine    atropine    emetine    Demerol   

ergonovine    nicotine    caffein    scopolamine    caffeine    brucine    ephedrine    cinchonine    curare    atropine   

alkaloids    hyoscyamine    saponins    caffeine    theine    mélange