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microfilament

[mahy-kruh-fil-uh-muh nt] /ˌmaɪ krəˈfɪl ə mənt/
noun, Cell Biology
1.
a minute, narrow tubelike cell structure composed of a protein similar to actin, occurring singly and in bundles, involved in cytoplasmic movement and changes in cell shape.
Origin
1960-1965
1960-65; micro- + filament
Related forms
microfilamentous
[mahy-kroh-fil-uh-men-tuh s] /ˌmaɪ kroʊˌfɪl əˈmɛn təs/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for microfilament

microfilament

/ˌmaɪkrəʊˈfɪləmənt/
noun
1.
thin filament, composed of the protein actin and associated proteins, that occurs abundantly in muscle and in the cytoplasm of other cells
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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microfilament in Medicine

microfilament mi·cro·fil·a·ment (mī'krō-fĭl'ə-mənt)
n.
Any of the minute fibers located throughout the cytoplasm of cells, composed of actin and functioning primarily in maintaining the structural integrity of a cell.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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