From Longman Dictionary of Contemporary Englishvisiting professorˌvisiting proˈfessor noun [countable] SECa university teacher who has come from another university to teach for a period of time
Examples from the Corpus
visiting professor• As a visiting professor at Yale, Malinowski later accepted a tenured appointment.• He was also visiting professor at King's College, London.• He was visiting professor at many universities in all five continents. 