Definition of vas deferens in English:

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vas deferens

Pronunciation: /ˌvas ˈdefərənz/ /-ˌrenz/

noun (plural vasa deferentia /ˌvāsə ˌdefəˈrenSH(ē)ə/ /ˌvāzə/)

The duct that conveys sperm from the testicle to the urethra.
Example sentences
  • During sexual activity, the sperm travels from the epididymis to the vas deferens with other glandular secretions.
  • These ducts carry the secretions produced by the seminal vesicle and the vas deferens.
  • Both fallopian tubes and vas deferens have the ability to rejoin after separation although this is an extremely rare occurrence.


Late 16th century: from vas + Latin deferens 'carrying away', present participle of deferre.

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