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| vas def·er·ens [ vàss déffərənz, vàss déffə rènz ] (plural va·sa def·er·en·ti·a [ vzə deffə rénshə, vàssə deffə rénshee ə ]) |
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| Definition: |
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sperm duct: either of a pair of ducts that carry sperm from the testes to the urethra during ejaculation. Contraction of its thick muscular wall propels sperm rapidly through the duct, which forms part of the spermatic cord.
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| [Late 19th century. < Latin, "carrying-away vessel"] |
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