/ Dictionary / Index V vasculum: Meaning and Definition of Find definitions for: vas•cu•lum Pronunciation: (vas'kyu-lum), [key] — pl. -la -lums. a kind of case or box used by botanists for carrying specimens as they are collected. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vascular tissue vas deferens Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language