/ Dictionary / Index W Wolffian duct: Meaning and Definition of Find definitions for: Wolff'ian duct' Pronunciation: [key] — Embryol. (sometimes l.c.)Embryol. a duct, draining the mesonephros of the embryo, that becomes the vas deferens in males and vestigial in females. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Wolffian body wolffish Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language