extensor Hear it!

extensor definition

ex·ten·sor (ek sten′sər, -sôr′; ik-)

noun

a muscle that extends or straightens some part of the body, esp. a flexed arm or leg

Etymology: LL extensor, stretcher < L extensus: see extensible

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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