/ Dictionary / Index G Gregorian mode: Meaning and Definition of Find definitions for: Grego'rian mode" Pronunciation: [key] — Music. Music. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gregorian chant Gregorian telescope Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language