triathlon Syllabification: (tri·ath·lon)Pronunciation: /trīˈaTHlən, -ˌlän/Definition of triathlon noun an athletic contest consisting of three different events, typically swimming, cycling, and long-distance running. Derivatives triathletePronunciation: /-ˌlēt/ noun Origin: 1970s: from tri- 'three', on the pattern of decathlontriathlon in other Oxford dictionaries Definition of triathlon in the British & World English dictionary
