Meaning of vasoconstriction

vas•o•con•stric•tion

Pronunciation: (vas"ō-kun-strik'shun, vā"zō-), [key]
— n. Physiol.
  1. constriction of the blood vessels, as by the action of a nerve.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
vasoactive vasoconstrictive