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2017 Word of the Year

motor unit

noun, Cell Biology, Physiology.
1.
a motor neuron and the muscle fibers innervated by its axon.
Origin of motor unit
1965-1970
First recorded in 1965-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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motor unit in Medicine

motor unit n.
A single somatic motor neuron and the group of muscle fibers innervated by it.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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