American English

Definition of decathlon noun from the Oxford Advanced American Dictionary

 

decathlon

 noun
noun
NAmE//dɪˈkæθlɑn//
 
, NAmE//dɪˈkæθlən//
 
 
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a sporting event in which people compete in ten different sports compare biathlon, heptathlon, pentathlon, tetrathlon, triathlon
See the Oxford Advanced Learner's Dictionary entry: decathlon