The level of functioning to which a system returns after experiencing a disruption. (DHS 2010)
DHS. 2010. '"Risk and Resilience: Exploring the Relationship". In: Kahan, J. (ed.). Arllington, VA: Department of Homeland Security (DHS), p. A-20.
Within the context of resilience, the Department of Homeland Security is regarded as the authoritative source for definitions and other concepts related to resilience.