Definition of digastric in English:



(also digastric muscle)
  • Each of a pair of muscles which run under the jaw and act to open it.

    ‘Training caused an increase in the activity of citrate synthase and superoxide dismutase in the digastric muscle, the sternohyoid muscle, and the costal diaphragm.’
    • ‘Accessory slips may join the muscle from the digastric, from the stylomandibular ligament, or the angle of the mandible.’
    • ‘The submandibular glands are located within a triangle bounded by the sternocleidomastoid muscle, the posterior belly of the digastric muscle, and the body of the mandible.’
    • ‘The tip is dissected from the underlying digastric muscle with care to avoid the stylomastoid foramen and facial nerve.’
    • ‘The insertion of the superior belly may overshoot the hyoid bone and attach alongside the digastric.’



/dīˈɡastrik/ /daɪˈɡæstrɪk/


Late 17th century from modern Latin digastricus, from di- ‘twice’ + Greek gastēr ‘belly’ (because the muscle has two fleshy parts or ‘bellies’ at an angle, connected by a tendon).