The system's ability to restructure itself in response to external changes or pressures. (Woods 2006)
Woods, David D. 2006. "Essential Characteristics of Resilience," In Resilience Engineering: Concepts and Precepts, edited by E. Hollnagel, Woods, David D., and Leveson, Nancy. Aldershot, UK: Ashgate Publlishing Limited.
This is a key term in the context of resilience.