a professor from another institution invited to teach at a university or college for a limited period, usually for a semester or one academic year.
Origin of visiting professor
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a professor invited to teach in a college or university other than his own, often in another country, for a certain period, such as a term or year
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012