pisiform n 1: a small wrist bone that articulates only with the triquetral [syn: {pisiform}, {pisiform bone}, {os pisiforme}]
Pisiform \Pi"si*form\, a. [L. pisum a pea + -form: cf. F. pisiforme.] Resembling a pea or peas in size and shape; as, a pisiform iron ore. [1913 Webster]
Pisiform \Pi"si*form\, n. (Anat.) A small bone on the ulnar side of the carpus in man and many mammals. See Illust. of {Artiodactyla}. [1913 Webster]