triathlon
noun /traɪˈæθlən/
/traɪˈæθlən/
- a sporting event in which people compete in three different sports, usually swimming, cycling and running compare biathlon, decathlon, heptathlon, pentathlon, tetrathlonTopics Sports: water sportsc1, Sports: other sportsc1Word Origin1970s: from tri- ‘three’, on the pattern of decathlon.