My"o*sin (?), n. [Gr. &?;, a muscle.] (Physiol. Chem.) 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.

&fist; Myosin belongs to the group of globulins. It is insoluble in water, but soluble in dilute solution of salt, and is especially characterized by being completely precipitated by saturation of its solutions with salt.

• An albuminous body present in dead muscle formed in the process of coagulation which takes place in rigor mortis.