/ Dictionary / Index I idem: Meaning and Definition of Find definitions for: i•dem Pronunciation: (ī'dem, id'em), [key] — pron., adj. the same as previously given or mentioned. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. idée fixe* idempotent Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language