historian

Từ điển Oxford Advanced Learner 8th

his·tor·ian [historian historians] BrE [hɪˈstɔːriən] NAmE [hɪˈstɔːriən] noun
a person who studies or writes about history; an expert in history  Some speakers do not pronounce the ‘h’ at the beginning of historian and use ‘an’ instead of ‘a’ before it. This now sounds old-fashioned.

Word Origin:
late Middle English: from Old French historien, via Latin from Greek historia ‘finding out, narrative, history’, from histōr ‘learned, wise man’, from an Indo-European root shared by wit ‘have knowledge’.

Example Bank:
•No serious historian today accepts this theory.
•Revisionist historians have questioned the accepted version of events.
•She is a writer as well as a distinguished modern historian.
•The oldest tradition goes back to the contemporary historian John Foxe.
•What will future historians make of the late 20th century?
•a talk given by an eminent social historian
•the official historian of the Labour Party
•the official historian of the United States Army