/ Dictionary / Index P Pythagorean scale: Meaning and Definition of Find definitions for: Pythag'ore'an scale' Pronunciation: [key] — Music. Music. the major scale as derived acoustically by Pythagoras from the perfect fifth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pythagoreanism Pythagorean theorem Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language