/ Dictionary / Index A alkaloidal: Meaning and Definition of Find definitions for: al•ka•loi•dal Pronunciation: (al"ku-loid'l), [key] — adj. of, pertaining to, or derived from alkaloids. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: alkaloidal (Thesaurus) alkaloid alkalosis Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language