/ Dictionary / Index R retinite: Meaning and Definition of Find definitions for: ret•i•nite Pronunciation: (ret'n-īt"), [key] — n. Mineral. any of various fossil resins, esp. one derived from brown coal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. retinal retinitis 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