[pe.riph.ery] n, pl -er.ies [MF peripherie, fr. LL peripheria, fr. Gk periphereia, fr. peripherein to carry around, fr. peri- + pherein to carry--more at bear] (1571) 1: the perimeter of a circle or other closed curve; also: the perimeter of a polygon
2: the external boundary or surface of a body 3 a: the outward bounds of something as distinguished from its internal regions or center: confines b: an area lying beyond the strict limits of a thing