Definition of humerus in English:



  • 1The bone of the upper arm or forelimb, forming joints at the shoulder and the elbow.

    • ‘The elbow joint is formed by three bones; the humerus, radius, and ulna.’
    • ‘The rotator cuff is made up of a ring of muscles and ligaments that joins the head of the humerus to the shoulder joint.’
    • ‘The humerus is the largest bone of the upper extremity.’
    • ‘Fractures of the humerus, scapula and clavicle usually result from a direct blow or a fall onto an outstretched hand.’
    • ‘The other concomitant injuries were bilateral serial rib fractures and fractures of both clavicles, scapula, humerus, and pelvis.’
    1. 1.1Entomology The structure forming the front basal corner of an insect's wing or wing case.


Late Middle English: from Latin, ‘shoulder’.