/ Dictionary / Index V vasotomy: Meaning and Definition of Find definitions for: vas•ot•o•my Pronunciation: (va-sot'u-mē), [key] — pl. -mies. incision or opening of the vas deferens. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vasotomy (Thesaurus) vasostimulant vasotonic Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language