-ATHON


Meaning of -ATHON in English

/ əθən; NAmE əθɑːn/ suffix

(in nouns) an event in which a particular activity is done for a very long time, especially one organized to raise money for charity :

a swimathon

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WORD ORIGIN

on the pattern of (mar)athon .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.