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a material used to reduce, by scattering collisions and without appreciable capture, the kinetic energy of neutrons, material such as water, heavy water, graphite used to slow down neutrons in a reactor
modérateur . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/mod%C3%A9rateur/1/fra (19.06.2026)