myofibril Hear it!

myofibril definition

myo·fibril (mī′ə fī′brəl)

noun

any of a number of tiny, contractile fibrils composed of actomyosin and bundled together within a muscle cell

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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