myofilament

noun
myo·fil·a·ment | \-ˈfi-lə-mənt \

Definition of myofilament 

: one of the individual filaments of actin or myosin that make up a myofibril

First Known Use of myofilament

1949, in the meaning defined above

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The first known use of myofilament was in 1949

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myofilament

noun
myo·fil·a·ment | \-ˈfil-ə-mənt \

Medical Definition of myofilament 

: one of the individual filaments of actin or myosin that make up a myofibril

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