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The Collaborative International Dictionary
Idiomuscular

Idiomuscular \Id`i*o*mus"cu*lar\, a. [Idio- + muscular.] (Physiol.) Applied to a semipermanent contraction of a muscle, produced by a mechanical irritant.

Wiktionary
idiomuscular

a. (context biology English) Applied to a semipermanent contraction of a muscle, produced by a mechanical irritant.