/ Dictionary / Index V vitrum: Meaning and Definition of Find definitions for: vit•rum Pronunciation: (vi'trum), [key] — pl. vit•ra (in prescriptions) glass. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vitriolize Vitruvian scroll 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