Pisiformis

Pisiformis is a Latin adjective meaning "pea-shaped." In scientific usage, it appears mainly in anatomy as a descriptor and, less commonly, in biological nomenclature as a species epithet. The term signals a pea-like shape or small size in a structure or organism.

In human anatomy, the related noun os pisiforme refers to the pisiform bone, a small, pea-shaped carpal bone on the ulnar side of the wrist. The pisiform is a sesamoid bone embedded within the tendon of the flexor carpi ulnaris and articulates with the triquetrum, contributing to wrist flexion mechanics and serving as a tendon and ligament attachment point. The adjective pisiformis is used in Latinized anatomical names to indicate similar pea-like shapes in other structures or species.

In taxonomy, pisiformis functions as a species epithet to denote a pea-like form or small size across diverse groups, including insects, mollusks, and plants. It is not a standalone taxon name but part of binomials or higher-level classifications.

Related terms include os pisiforme (the pisiform bone) and pisiform (the shape or form described as pea-like). The usage of pisiformis is primarily descriptive, rather than signifying a single, dedicated genus or species.