/ Dictionary / Index M modicum: Meaning and Definition of Find definitions for: mod•i•cum Pronunciation: (mod'i-kum), [key] — n. a moderate or small amount: He hasn't even a modicum of common sense. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: modicum (Thesaurus) ModHeb modif. Related Content Daily Word Quiz: vernacular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language