cap it'ulum

[L. dim. of caput, head.] r. small head or rounded articular extremity of a bone. 2. In botany, an inflorescence of se ile flowers crowded together into a common head. u. cos'tee [BNA], the head of a rib articulating by two facets with the bodies of two contiguous vertebrae, c. flb'ulae, head or upper extremity of the fibula, which articulates by a facet with the under surface of the external condyle of the tibia, c. hu'meri [BNA], small or radial head, capitellum, of the humerus, c. mall'ei, the head of the malleus articulating with the body of the incus, c. mandib'ulae [BNA], head of the mandible, condyle of the lower jaw. c. ra'dii, head of the radius, the disc-shaped upper extremity articulating with the capitellum, or capitulum, of the humerus, c. sta'ped is [BNA], the head of the stapes which articulates with the lenticular proce of the incus, c. ul'ns, head or lower extremity of the ulna.