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 muscle is one of the musculotendinous support structures called the rotator cuff that surround and enclose the shoulder. It helps to resist the inferior gravitational forces placed across the shoulder joint due to the downward pull from the weight of the upper limb.
Medical Definition of supraspinatus. : a muscle of the back of the shoulder that arises from the supraspinous fossa of the scapula, that inserts into the top of the greater tubercle of the humerus, that is one of the muscles making up the rotator cuff of the shoulder, and that rotates the humerus laterally and helps to abduct the arm.