/ Dictionary / Index I instructor: Meaning and Definition of Find definitions for: in•struc•tor Pronunciation: (in-struk'tur), [key] — n. a person who instructs; teacher. a teacher in a college or university who ranks below an assistant professor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: instructor (Thesaurus) instructive instructress Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language