peripheralPronunciation: /pəˈrɪf(ə)r(ə)l/Translate peripheral | into French | into German | into Italian | into Spanish Definition of peripheral adjective 1relating to or situated on the edge or periphery of something:the peripheral areas of Europe of secondary or minor importance; marginal:she will see their problems as peripheral to her own Anatomy near the surface of the body, with special reference to the circulation and nervous system:lymphocytes from peripheral blood 2(of a device) able to be attached to and used with a computer, though not an integral part of it: a peripheral control processor noun Computing a peripheral device: printers and other peripheralsDerivatives peripheralityPronunciation: /-ˈralɪti/ noun peripheralization (also peripheralisation) noun peripheralize (also peripheralise) verb peripherally adverb peripheral in other Oxford dictionaries Definition of peripheral in the US English dictionary