Definition of professor noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//prəˈfesə(r)//
    ; NAmE NAmE//prəˈfesər//
    (informal prof) (abbreviation Prof.) University people, Professions
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  1. 1  (especially British English) (North American English full professor) a university teacher of the highest rank Professor (Ann) Williams a chemistry professor to be appointed Professor of French at Cambridge He was made (a) professor at the age of 40. Full professor is used to describe a rank of university teacher, and not as a title. See related entries: University people, Professions
  2. 2  (North American English) a teacher at a university or college See related entries: University people
  3. compare assistant professor, associate professor
    Word Originlate Middle English: from Latin professor, from profess- ‘declared publicly’, from the verb profiteri, from pro- ‘before’ + fateri ‘confess’. Extra examplesI spent six months as a visiting professor at Brown University. Jennifer Bradbery, emerita professor/​professor emerita of surgery a research professor at the University of Southern California a respected law professor at a prestigious university an eminent professor of English He is a distinguished professor of law at the University of Illinois. He was made a professor at the age of 40. Professor Smith She is a former history professor. She was my professor when I was a grad student. The opening address will be given by Professor Montgomery, professor emeritus of microbiology at Birkbeck College. The report was written by two Harvard professors.
See the Oxford Advanced American Dictionary entry: professor