noun, plural pe·riph·er·ies. the external boundary of any surface or area.

What's the meaning of the word periphery?

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. 3a : 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.

What are your peripheries?

1. The part of a body away from the center; the outer part or surface.