actin

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noun ac·tin \ˈak-tən\

Definition of actin

  1. :  a cellular protein found especially in microfilaments (such as those comprising myofibrils) and active in muscular contraction, cellular movement, and maintenance of cell shape

Recent Examples of actin from the Web

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Origin and Etymology of actin

International Scientific Vocabulary, from Latin actus


First Known Use: 1942


actin-

combining form ac·tin
variants: or

actini-

or

actino-

Definition of actin-

  1. 1 :  having a radiate form actinolite

  2. 2 :  actinic radiation (such as X-rays) actinometer

Origin and Etymology of actin-

New Latin, ray, from Greek aktin-, aktino-, from aktin-, aktis; perhaps akin to Old English ūhte morning twilight, Latin noct-, nox night — more at night


Medical Dictionary

actin

play
noun ac·tin \ˈak-tən\

Medical Definition of actin

  1. :  a protein found especially in microfilaments (as those comprising myofibrils) and active in muscular contraction, cellular movement, and maintenance of cell shape—see f-actin, g-actin


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