American English

Definition of Web 2.0 noun from the Oxford Advanced American Dictionary

 

Web 2.0

 noun
noun
NAmE//ˌwɛb tu pɔɪnt ˈoʊ//
 
[uncountable]
 
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the developments in the way that people use the Internet that allow users free access and give them more control over the information the hype about Web 2.0 the phenomenon of Web 2.0 with its blogs and wikis
See the Oxford Advanced Learner's Dictionary entry: Web 2.0