/ Dictionary / Index H historian: Meaning and Definition of Find definitions for: his•to•ri•an Pronunciation: (hi-stôr'ē-un, -stōr'-), [key] — n. an expert in history; authority on history. a writer of history; chronicler. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: historian (Thesaurus) histoplasmosis historic Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language