¹ Source: wiktionary.com
Medical Definition of Carpal bones
1. Eight bones arranged in two rows that articulate proximally with the radius and indirectly with the ulna, and distally with the five metacarpal bones; in domestic mammals, the bones of the proximal row are called radial, intermediate, ulnar, and accessory, while those of the distal row are termed first, second, third, and fourth carpal bones. Synonym: carpus, ossa carpi. (05 Mar 2000)