Bounded Context

A Bounded Context can be considered as a miniature application, containing it's own Domain, own code and peristsence mechanisms. 

Within a Bounded Context, there should be logical consistency, each Bounded Context should be independent of any other Bounded Context. 

Communication to and from a Bounded Context is done via a Context Map

See also:

Blogged Bounded Contexts

domaindrivendesign.org definitions:

• Bounded Context http://dddstepbystep.com/r.ashx?3
• Context Map http://dddstepbystep.com/r.ashx?4