From Longman Dictionary of Contemporary EnglishWeb 2.0Web 2.0 /ˌweb tuː pɔɪnt ˈəʊ $ -ˈoʊ/ noun [uncountable] technical advanced ways of using the Internet, for example ways of sharing information using blogs and wikisFrom Longman Business DictionaryWeb 2.0Web 2.0 noun [uncountable] COMPUTING advanced Internet technology and the purposes for which it can be used, especially ways of sharing information, for example blogs and wikis