Web 2.0
noun
a second generation in the development of the World Wide Web, conceived as a combination of concepts, trends, and technologies that focus on user collaboration, sharing of user-generated content, and social networking.
Origin of Web 2.0
First recorded in 2000–05
British Dictionary definitions for web 2.0
Web 2.0
noun
the internet viewed as a medium in which interactive experience, in the form of blogs, wikis, forums, etc, plays a more important role than simply accessing information