Category:Alkaloid

Al"ka*loid, n. (Chem.)

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

Note: Alcaloids all contain nitrogen, carbon, and hydrogen, and many of them also contain oxygen. They include many of the active principles in plants; thus, morphine and narcotine are alkaloids found in opium.

Al"ka*loid, Al`ka*loid"al, a. Etym: [Alkali + -oid: cf. F. alcaloïde.]

Defn: Pertaining to, resembling, or containing, alkali.