1. 1  a suffix, equivalent in meaning to -ic, occurring in adjectives of Greek origin (analytic), used especially in the formation of adjectives from nouns with stems in -sis: hematotic; neurotic. Origin of -tic. Greek.
The supraspinatus (plural supraspinati, from Latin supraspinatus) is a relatively small muscle of the upper back that runs from the supraspinatous fossa superior of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator cuff muscles and also abducts the arm at the shoulder.
Muscle, infraspinatus: A muscle that assists the lifting of the arm while turning the arm outward (external rotation). The tendon of the infraspinatus muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff.Each of the four tendons that makes up the rotator cuff hooks up to a muscle that moves the shoulder in a specific direction. The infraspinatus muscle; 2  The teres minor muscle, which (like the infraspinatus muscle) helps in the outward turning (external rotation) of the arm; 3  The supraspinatus muscle, which is responsible for elevating the arm and moving it away from the body; and.