/ Dictionary / Index P pentathlon: Meaning and Definition of Find definitions for: pen•tath•lon Pronunciation: (pen-tath'lun, -lon), [key] — n. an athletic contest comprising five different track and field events and won by the contestant gaining the highest total score. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pentathlon (Thesaurus) pentathlete pentatonic scale Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language