Dictionary.com
definitions

vasospasm

[vas-oh-spaz-uh m, vey-zoh-]

noun

sudden constriction of an artery, leading to a decrease in its diameter and in the amount of blood it can deliver.

Origin of vasospasm

First recorded in 1900–05; vaso- + spasm
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
vasospasm in Medicine

vasospasm

[vā′zō-spăz′əm]

n.

A sudden constriction of a blood vessel that reduces the blood flow.angiospasm
Related formsva′so•spas′tic (-spăs′tĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.