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English definition of “half-life”

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half-life

noun [C] uk   /ˈhɑːf.laɪf/ us    /ˈhæf-/ specialized
the length of time needed for the radioactivity of a radioactive substance to be reduced by half
Translations of “half-life”
in Chinese (Traditional) (放射性物質的)半衰期…
in Chinese (Simplified) (放射性物质的)半衰期…
(Definition of half-life from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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