Home › Words › I › ideathonideathonideathon · noun — A collaborative event where people meet to discuss and evaluate ideas.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, ideathon ranks #36,137 of 42,820 for Qualifying.EtymologyFrom idea + -athon.nounA collaborative event where people meet to discuss and evaluate ideas.Definitions & examples from Wiktionary (CC BY-SA 3.0).