concrétiser bedeutet auf Englisch

concrete [concreted, concreting, concretes]▼◼◼◼(solidify, become concrete (actual, real))
verb
[UK: ˈkɒŋ.kriːt] [US: kən.ˈkriːt]

concretize [concretized, concretizing, concretizes]▼◼◼◻(to make substantial, real, or tangible)
verb
[UK: ˈkɒn.kriː.taɪz] [US: ˈkɑːn.krə.ˌtaɪz]