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myosin

[ mahy-uh-sin ]
/ ˈmaɪ ə sɪn /
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noun Biochemistry.
the principal contractile protein of muscle.
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Origin of myosin

First recorded in 1865–70; my- + -ose2 + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use myosin in a sentence

British Dictionary definitions for myosin

myosin
/ (ˈmaɪəsɪn) /

noun
the chief protein of muscle that interacts with actin to form actomyosin during muscle contraction; it is also present in many other cell types

Word Origin for myosin

C19: from myo- + -ose ² + -in
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

Medical definitions for myosin

myosin
[ mīə-sĭn ]

n.
The commonest protein in muscle cells, a globulin responsible for the elastic and contractile properties of muscle and combining with actin to form actomyosin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for myosin

myosin
[ mīə-sĭn ]

A protein found in muscle tissue as a thick filament made up of an aggregate of similar proteins. Myosin and the protein actin form the contractile units (sarcomeres) of skeletal muscle. In the sarcomere, actin and myosin filaments slide past each other to cause the shortening of a muscle fiber.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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