/ Dictionary / Index V vitrectomy: Meaning and Definition of Find definitions for: vit•rec•to•my Pronunciation: (vi-trek'tu-mē), [key] — pl. -mies. the microsurgical procedure of removing the vitreous humor and replacing it with saline solution, performed to improve vision that has been impaired by opacities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vitrectomy (Thesaurus) vitrain vitreous Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language