What is a vessel; a duct. Vas deferens; pl. Vasa deferentia. Etym: [L. vas vessel + deferens carrying down.] (Anat.) The excretory duct of a testicle; a spermatic duct called?

vas — A vessel; a duct. Vas deferens; pl. Vasa deferentia. Etym: [L. vas vessel + deferens carrying down.] (Anat.) The excretory duct of a testicle; a spermatic duct. (Webster's 1913.)

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