halfâlife
1 ENTRIES FOUND:
plural
halfâlives
plural
halfâlives
Britannica Dictionary definition of HALFâLIFE
[count]
technical
:
the time it takes for a radioactive substance to lose half its radioactivity
— often used figuratively to describe how long something remains useful or popular
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a half-life of 200,000 years
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Slang usually has a short half-life. [=slang usually is popular for only a short time]
