noun Etymology: tri- + -athlon (as in decathlon) Date: 1973 an athletic contest that is a long-distance race consisting of three phases (as swimming, bicycling, and running)
TRIATHLON
Meaning of TRIATHLON in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012