Definition of subscapularis in US English:

subscapularis

noun

Anatomy Zoology
  • More fully "subscapularis muscle". A muscle originating from the subscapular fossa and inserted on the lesser tuberosity of the humerus, acting to rotate the arm medially.

Origin

Early 17th century; earliest use found in Helkiah Crooke (1576–1648), physician and anatomist. From post-classical Latin subscapularis from sub- + scapularis.