/ Dictionary / Index P Pythagoras: Meaning and Definition of Find definitions for: Py•thag•o•ras Pronunciation: (pi-thag'ur-us), [key] — n. c582–c500b.c.,Greek philosopher, mathematician, and religious reformer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pythagoras (Thesaurus) pyruvic aldehyde Pythagorean Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language