(of certain muscles) having two fleshy portions joined by a tendon
noun
2.
a muscle of the mandible that assists in lowering the lower jaw
Word origin
C17: from New Latin digastricus (with two bellies), from di-1 + gastricus gastric, from Greek gastēr belly
digastric in American English
(daɪˈgæstrɪk)
adjective
designating or of a muscle that bellies out from both sides of its tendon, esp. such a musclein the neck that helps to lower the jaw and indirectly moves the tongue
Word origin
ModL digastricus < Gr di-, two + gastēr, belly: see gastro-