D defs.my
Entry 2 senses Webster, 1913

Historian

/hĭs-tôr'-ē-ən/ · His·to·ri·an · IPA /hɪˈstɔɹi.ən/
01 n. A writer of history; a chronicler; an annalist.
  1. 1.
    A writer of history; a chronicler; an annalist.
    “Even the historian takes great liberties with facts.” — Sir J. Reynolds.
  2. 2.
    One versed or well informed in history.
    “Great captains should be good historians.” South.