noun

• The sheath of connective tissue surrounding a bundle of muscle fibres.

  ‘Muscle is really composed of not merely muscle cells, but also connective tissue - endomysium, perimysium, and epimysium.’

  More example sentences

  • ‘The bundle of fibers with its endomysium is surrounded by a more fibrous connective tissue sheath known as the perimysium.’
  • ‘A thin layer of extracellular matrix (perimysium) separating fiber groups within the muscle appears in cross-section.’

  Synonyms

  covering, cover, case, casing, envelope, sleeve, wrapper