peripheral Syllabification: (pe·riph·er·al)Pronunciation: /pəˈrifərəl/Translate peripheral | into French | into German | into Italian | into Spanish Definition of peripheral adjective of, relating 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 [attributive] (of a device) able to be attached to and used with a computer, although not an integral part of it. Anatomy near the surface of the body, with special reference to the circulation and nervous system:lymphocytes from peripheral blood noun Computing a peripheral device. Derivatives peripheralityPronunciation: /-ˌrifəˈralitē/ noun peripheralizationPronunciation: /pəˌrifərəliˈzāSHən/ noun peripheralizePronunciation: /-ˌīz/ verb peripherally adverb peripheral in other Oxford dictionaries Definition of peripheral in the British & World English dictionary