myosin

/M AY1 AH0 S AH0 N/
noun
  1. 1

    Any of a large family of motor proteins found in eukaryotic tissues, allowing mobility in muscles.

  2. 2

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

Source: https://en.wiktionary.org/wiki/myosin