from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Anatomy The rounded protuberance at the lower end of the humerus that articulates with the radius.
from The Century Dictionary and Cyclopedia
- n. In anatomy: The rounded convex articular eminence upon the distal extremity of the humerus (capitellum humeri), which is received in the cup-shaped head of the radius.
- n. The head of a rib (capitellum costæ), as distinguished from the tuberculum or shoulder. Also called capitulum.
- n. In zoology, the tentacular portion of the body or the hydranth of a hydroid polyp; that part of the hydranth which bears tentacles and appears to be analogous to a head.
Late Latin, diminutive of Latin caput, capit-, head; see kaput- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)