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myofibril

[ mahy-uh-fahy-bruhl, -fib-ruhl ]

noun

, Cell Biology.
  1. a contractile fibril of skeletal muscle, composed mainly of actin and myosin.


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Word History and Origins

Origin of myofibril1

First recorded in 1895–1900; myo- + fibril

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myoelectricmyofilament