Dictionary.net

Is the cylindrical, irregular bone of the arm; the upper extremity of which has a hemispherical head connected with the scapula; and two tuberosities or tubercles, a greater and a lesser, for the attachment of muscles, between which is the Bicipital groove or Fossa. At the inferior extremity maybe remarked- the inner condyle, the outer condyle; the small head, which is articulated with the radius; the trochlea articulated with the ulna, &c. The humerus is developed by seven points of ossification: - one for the body; one for the head; one for the greater tuberosity; one for the trochlea; one for the epitrochlea; one for the epicondyle; and another for the lesser head.