/ Dictionary / Index R rhematic: Meaning and Definition of Find definitions for: rhe•mat•ic Pronunciation: (ri-mat'ik), [key] — adj. pertaining to the formation of words. pertaining to the rheme of a sentence. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rheita rheme Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language