Definition of microfilament in English:


Syllabification: mi·cro·fil·a·ment
Pronunciation: /ˌmīkrōˈfiləmənt


  • A small rodlike structure, about 4-7 nanometers in diameter, present in numbers in the cytoplasm of many eukaryotic cells.
    More example sentences
    • Actin is the major constituent protein of microfilaments in eukaryotic cells.
    • Some cells possessed abundant, randomly arranged thin microfilaments in their cytoplasm.
    • If microfilaments antagonize microtubules, this uneven distribution of microfilaments should affect microtubule morphology.

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