/ Dictionary / Index C choroid coat: Meaning and Definition of Find definitions for: cho'roid coat" Pronunciation: [key] — Ophthalm. Ophthalm. a pigmented, highly vascular membrane of the eye that is continuous with the iris and lies between the sclera and the retina, functioning to nourish the retina and absorb scattered light. See diag. underAlso called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. choroid choroiditis Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language