Term Definition: Sub-Process
Main Description

A Sub-Process is a Process that is included within another Process. The Sub-Process can be in a collapsed view that hides its details. A Sub-Process can be in an expanded view that shows its details within the view of the Process within it is contained. A Sub-Process shares the same shape as the Task, which is a rectangle that has rounded corners.

This term can be found in the OMG  Business Process Modeling Notation, V1.2 (Beta 3)  specification http://www.omg.org/cgi-bin/doc?formal/09-01-04.pdf