The definition of a professor is a teacher at a college or a university, or an instructor in a specialized field.(noun)
A man who teaches English at Harvard University is an example of an English professor.
See professor in Webster's New World College Dictionary
Origin: ME professoure < L, teacher < professus: see profess
See professor in American Heritage Dictionary 4
Origin: Middle English professour
Origin: , from Old French professeur
Origin: , from Latin professor
Origin: , from professus
Origin: , past participle of profitērī, to profess; see profess.
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