PISIFORM Meaning of PISIFORM in English [pi.si.form] adj [L pisum pea + E -iform--more at pea] (1767): resembling a pea in size or shape [2]pisiform n (ca. 1771): a bone on the ulnar side of the carpus in most mammals Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012