Definition of hackathon noun from the Oxford Advanced Learner's Dictionary

 

hackathon

 noun
noun
BrE BrE//ˈhækəθɒn//
 
; NAmE NAmE//ˈhækəθɑːn//
 
(informal)
 
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an event at which a large number of people work together developing computer programs, usually over several days The company is hosting a two-day hackathon to develop new apps for the platform. Word Origin 1990s: from hack, on the pattern of marathon.