IMPROVER is a Horizon 2020 project focusing on how to improve European critical infrastructure resilience to crises and disasters through the implementation of resilience concepts to real life examples of pan-European significance, including cross-border examples.

The project will develop methodologies for the implementation of societal, organisational and technological resilience concepts to critical infrastructure. To this end, it requires several resilience-related concepts to be identified and defined.

This is the first version of the IMPROVER Lexicon of Definitions. It is the result of the first phase of the international survey conducted by the project and it gathers several resilience concepts and their definitions, as well as other key related terms. We envisage that this will be a dynamic document; that is to say that it will be updated and expanded throughout the duration of the project.

At this stage, the document identifies and lists several identified definitions for each relevant to critical infrastructure concept, followed by a discussion. This helps the reader to identify similarities, common elements and differences among the listed definitions and work towards selecting a suitable definition for his/her work. For the IMPROVER project, we foresee that in upcoming versions of the document, we will be able to suggest and agree one definition for each term, which will be used by the project partners for the duration of the project and will reflect the assumptions of the proposed IMPROVER methodology.