/ Dictionary / Index V vas deferens: Meaning and Definition of Find definitions for: vas de•fe•rens Pronunciation: (vas' def'u-renz", -ur-unz), [key] — pl. va•sa de•fe•ren•ti•a the duct that transports the sperm from the epididymis to the penis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vasculum vase Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language