noun, plural ep·i·my·si·a [ep-uh–miz-ee-uh, –mizh-] /ˌɛp əˈmɪz i ə, -ˈmɪʒ-/. Anatomy.
- the sheath of connective tissue around a muscle.
noun plural -sia (-zɪə)
- anatomy the sheath of connective tissue that encloses a skeletal muscle
n. pl. ep•i•mys•i•a (-mĭz′ē-ə, -mĭzh′–)
- The external sheath of connective tissue surrounding a muscle.