A definition from AlternativeWorship.org:

• Christians reinventing faith expression for themselves within their own cultural settings
• a response to postmodern Western society and cultural change
• faith expression within culture not in a parallel ‘Christian’ culture
• reconsideration of all inherited church forms and structures, including recent modernising ones
• rediscovery of ancient and alternative Christian traditions as resources for the present and future
• paradigm shift from centralised into networked forms of church