half-life
pronunciation
How to pronounce half-life in British English:
UK [ˈhæfˌlaɪf, ˈhɑ:f-]
How to pronounce half-life in American English:
US [ˈhæfˌlaɪf, ˈhɑf-]
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- Noun:
- the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)