/ Dictionary / Index V vitreous humor: Meaning and Definition of Find definitions for: vit'reous hu'mor Pronunciation: [key] — Anat. Anat. the transparent gelatinous substance filling the eyeball behind the crystalline lens. See diag. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vitreous vitrescent Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language