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



BrE BrE//ˈmentɔː(r)//
; NAmE NAmE//ˈmentɔːr//
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an experienced person who advises and helps somebody with less experience over a period of time She was a friend and mentor to many young actors. His former coach had remained his mentor throughout his career. compare mentee Word Originmid 18th cent.: via French and Latin from Greek Mentōr, the name of the adviser of the young Telemachus in the Greek epic poem the Odyssey by Homer.
See the Oxford Advanced American Dictionary entry: mentor