One of two appendages on each side of last five thoracic somites (appendage pairs of first three being modified as maxillipeds). Basically biramous, consisting of protopod, endopod, and exopod; exopod is often reduced, resulting in seven-segmented limb (coxa, basis, ischium, merus, carpus, propodus, dactylus).
(M. Stachowitsch, 1992)

Alternative forms for pereiopod : ambulatory leg, ambulatory legs, peraeopod, peraeopods, pereiopodal, pereiopods, pereopod, pereopods, walking leg, walking legs.