/ Dictionary / Index H hyaloid membrane: Meaning and Definition of Find definitions for: hy'aloid mem"brane Pronunciation: [key] the delicate, pellucid, and nearly structureless membrane enclosing the vitreous humor of the eye. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyaloid hyalomere Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language