Twitch | definition of twitch by Medical dictionary

twitch [twich] a brief, contractile response of a skeletal muscle elicited by a single maximal volley of impulses in the neurons supplying it. twitch (twich), 1. To jerk spasmodically. 2. A momentary spasmodic contraction of a muscle fiber. [A.S. twiccian] twitch (twĭch) v. twitched, twitching, twitches v.tr. To draw, pull, or move suddenly and sharply …

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