Définition anglaise de “half-life”

Définition de "half-life" - Dictionnaire Anglais Américain

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half-lifenoun [ C usually sing ]

us /ˈhæfˌlɑɪf/

physics, earth science the amount of time needed for the radioactivity (= harmful form of energy) of a radioactive substance to be reduced by half

(Definition of “half-life” from the Cambridge Academic Content Dictionary © Cambridge University Press)