myofibril

[ mahy-uh-fahy-bruh l, -fib-ruh l ]
/ ˌmaɪ əˈfaɪ brəl, -ˈfɪb rəl /

noun Cell Biology.

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

Origin of myofibril

First recorded in 1895–1900; myo- + fibril

Words nearby myofibril

myoepithelioma, myoepithelium, myofacial pain-dysfunction syndrome, myofascial, myofascitis, myofibril, myofibroblast, myofibroma, myofibrosis, myofibrositis, myofilament

Medical definitions for myofibril

myofibril
[ mī′ə-fī′brəl, -fĭb′rəl ]

n.

One of the threadlike longitudinal fibrils occurring in a skeletal or cardiac muscle fiber. sarcostyle