What is "pisiform bone"

n. (context anatomy English) A small knobbly, pea-shaped sesamoid bone of the wrist.

n. a small wrist bone that articulates only with the triquetral [syn: pisiform, os pisiforme]

The pisiform bone ( or ), also spelled pisiforme (from the Latin pisifomis, pea-shaped), is a small knobbly, pea-shaped bone that is found in the wrist. It forms the ulnar border of the carpal tunnel.