Pe·riph'er·y noun ; plural Peripheries . [ Latin peripheria , Greek ...; ... around + ... to bear, carry: confer French périphérie .] 1. The outside or superficial portions of a body; the surface. 2. (Geom.) The circumference of a circle, ellipse... Found on http://www.encyclo.co.uk/webster/P/57
periphery 1. The outside boundary or surface of something. 2. The outside or surface of a structure; the portion outside the central region. 3. The circumference of a circle or other geometric figure. Found on http://www.wordinfo.info/words/index/info/view_unit/1610/13