spasm

spasm definition - medical

spasm (spăzˈəm)

noun
  1. A sudden involuntary contraction of a muscle or group of muscles.
  2. A muscle spasm.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.