Dictionary
vas
Pronunciation: (vas), [key]—
n.,
—pl. va•saPronunciation: (vā'su). [key]
Anat., Zool., Bot.
a vessel or duct.
vas-
var. of
vaso- before a vowel:
vasectomy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.