myosin

n. commonest protein which constitutes the muscles and facilitates muscle contraction (Medicine)

Myosins are a large family of motor proteins found in eukaryotic tissues. They are responsible for actin-based motility.
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n. myosin, commonest protein which constitutes the muscles and facilitates muscle contraction (Medicine)

(n.)
An albuminous body present in dead muscle, being formed in the process of coagulation which takes place in rigor mortis; the clot formed in the coagulation of muscle plasma. See Muscle plasma, under Plasma.
  

Noun
1. the commonest protein in muscle; a globulin that combines with actin to form actomyosin
(hypernym) globulin
(substance-holonym) actomyosin