myofibril

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

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

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Origin of myofibril

1
First recorded in 1895–1900; myo- + fibril

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

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