the.com/vas

The vas deferens carries sperm from the testicle, and is the duct sealed during a vasectomy.

means Short for vas deferens, the duct that carries sperm from the testicle toward the urethra — and the thing a vasectomy cuts or seals.

from From Latin 'vas,' meaning vessel or duct — the same plain word Romans used for jars, containers, any hollow carrier of stuff. Anatomists borrowed it wholesale for the body's tubing: vas deferens ('carrying-away vessel'), vas sanguineum, and so on. 'Vas' as the casual clinical shorthand is just that old Latin container-word, worn down to one syllable by doctors in a hurry.

full name
vas deferens, Latin for carrying vessel
reversal odds
works, but success drops over time
sperm fate
body just reabsorbs them, no backup needed
not immediate
takes weeks and a clear test to confirm
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