myofibril

noun
myo·​fi·​bril | \ ˌmī-ə-ˈfī-brəl How to pronounce myofibril (audio) , -ˈfi- How to pronounce myofibril (audio) \

Definition of myofibril

: any of the longitudinal parallel contractile elements of a muscle cell that are composed of myosin and actin

Other Words from myofibril

myofibrillar \ ˌmī-​ə-​ˈfī-​brə-​lər How to pronounce myofibrillar (audio) \ adjective

First Known Use of myofibril

1898, in the meaning defined above

History and Etymology for myofibril

New Latin myofibrilla, from my- + fibrilla fibril

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The first known use of myofibril was in 1898

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myofibril

noun
myo·​fi·​bril | \ ˌmī-ō-ˈfīb-rəl, -ˈfib- How to pronounce myofibril (audio) \

Medical Definition of myofibril

: one of the longitudinal parallel contractile elements of a muscle cell that are composed of myosin and actin

Other Words from myofibril

myofibrillar \ -​rə-​lər How to pronounce myofibrillar (audio) \ adjective

More from Merriam-Webster on myofibril

Britannica.com: Encyclopedia article about myofibril

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