vaso-

1.
a combining form meaning “vessel,” used in the formation of compound words:
vasoconstrictor.
Also, especially before a vowel, vas-.
Origin
< Latin vās vessel + -o-
British Dictionary definitions for vaso-

vaso-

combining form
1.
indicating a blood vessel: vasodilator
2.
indicating the vas deferens: vasectomy
Word Origin
from Latin vās vessel
vaso- in Medicine

vaso- or vas-
pref.

  1. Blood vessel: vasoconstriction.

  2. Vas deferens: vasectomy.

  3. Vessel: vasiform.