[noun] [C usually singular] - the outer edge of an areaHouses have been built on the periphery of the factory site.The ring road runs around the periphery of the city centre.The periphery is also the less important part of a group or activity.Many women feel they are being kept on the periphery of the armed forces.
PERIPHERY
Meaning of PERIPHERY in English
Cambridge English vocab. Кембриджский английский словарь. 2012