muscle whose action is normally controlled by an individual's will; mainly skeletal muscle, composed of parallel bundles of striated, multinucleate fibers.
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- voluntary abortion,
- voluntary aid detachment,
- voluntary arrangement,
- voluntary association,
- voluntary retailer,
- voluntary sector,
- volunteer army
Origin of voluntary muscle
First recorded in 1780–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A muscle, such as any of the striated muscles except the heart, whose action is normally controlled by individual volition.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.