Here it is:
Concordism Definition #1: Interpret Scripture as agreeing with mainstream science in all areas.
Concordism Definition #2: Interpret Scripture as agreeing with mainstream science in some areas (e.g., astronomy and geology) but not others (e.g., biology). This view is advocated by many old-earth creationists and Intelligent Design advocates who, for various reasons, reject mainstream evolutionary theory.
Concordism Definition #3: Interpret Scripture as disagreeing with mainstream science on both the age of the universe/earth and evolution, and thus mainstream science needs to be revised. This view is advocated primarily by young-earth creationists.