Found 2 items, similar to alkaloid.
English → English (WordNet) Definition: alkaloid alkaloid n : natural nitrogen-containing bases found in plants
English → English (gcide) Definition: Alkaloid Alkaloid \Al"ka*loid\ ([a^]l"k[.a]*loid), Alkaloidal \Al`ka*loid"al\ ([a^]l`k[.a]*loid"al), a. [Alkali + -oid: cf. F. alcalo["i]de.] 1. Pertaining to, resembling, or containing, alkali. [1913 Webster] 2. of or pertaining to alkaloids. [WordNet 1.5] Alkaloid \Al"ka*loid\ ([a^]l"k[.a]*loid), n. (Chem.) 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. [1913 Webster] Note: Alkaloids 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. [1913 Webster]