/ Dictionary / Index I in re: Meaning and Definition of Find definitions for: in re Pronunciation: (in rē', rā'), [key] in the matter of. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. inradius in rem Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language