Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

vas deferens

play
noun vas def·er·ens \ˈvas-ˈde-fə-rənz, -ˌrenz\

Definition of vas deferens

plural va·sa def·er·en·tia play \ˈvā-zə-ˌde-fə-ˈren(t)-sh(ē-)ə\

  1. :  a sperm-carrying duct especially of a higher vertebrate that in the human male is a thick-walled tube about two feet (0.61 meters) long that begins at and is continuous with the tail of the epididymis and eventually joins the duct of the seminal vesicle to form the ejaculatory duct



Origin of vas deferens

New Latin, literally, deferent vessel


First Known Use: 1578

Rhymes with vas deferens


Medical Dictionary

vas deferens

play
noun vas def·er·ens \-ˈdef-ə-rənz, -ˌrenz\

Medical Definition of vas deferens

plural vasa def·er·en·tia \-ˌdef-ə-ˈren-ch(ē-)ə\play

  1. :  a sperm-carrying duct especially of a higher vertebrate that in humans is a small but thick-walled tube about two feet (0.6 meter) long formed by the union of the vasa efferentia, is greatly convoluted in its proximal portion, begins at and is continuous with the tail of the epididymis, runs in the spermatic cord through the inguinal canal, and descends into the pelvis where it joins the duct of the seminal vesicle to form the ejaculatory duct—called also ductus deferens, spermatic duct



Illustration of vas deferens


Learn More about vas deferens


Seen and Heard

What made you want to look up vas deferens? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 12, 2016

of, relating to, or suggestive of marble

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

16.96 pounds 100 pounds 2.2 pounds 196.5 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ