Wolffian duct

noun (sometimes lowercase) Embryology.
a duct, draining the mesonephros of the embryo, that becomes the vas deferens in males and vestigial in females.

1875–80; named after K. F. Wolff; see -ian

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Medical Dictionary

wolffian duct n.
A duct in the embryo draining the mesonephric tubules, becoming the vas deferens in the male and forming vestigial structures in the female. Also called mesonephric duct.

The American Heritage® Stedman's Medical Dictionary
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