myofilament

my·o·fil·a·ment

[mahy-uh-fil-uh-muhnt]
noun Cell Biology.
a threadlike filament of actin or myosin that is a component of a myofibril.

Origin:
1945–50; myo- + filament

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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American Heritage
Medical Dictionary

myofilament my·o·fil·a·ment (mī'ə-fĭl'ə-mənt)
n.
Any of the ultramicroscopic filaments, made up of actin and myosin, that are the structural units of a myofibril.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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00:10
Myofilament is always a great word to know.
So is flibbertigibbet. Does it mean:
a scrap or morsel of food left at a meal.
a chattering or flighty, light-headed person.
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