\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.

\Pi"si*form\, n. (Anat.)
A small bone on the ulnar side of the carpus in man and many
mammals. See Illust. of {Artiodactyla}.