tic

tic definition - medical

tic (tĭk)

noun
A habitual spasmodic muscular movement or contraction, usually of the face or extremities. Also called habit spasm.

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

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