half–life
1 ENTRIES FOUND:
plural
half–lives
plural
half–lives
Britannica Dictionary definition of HALF–LIFE
[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
-
a half-life of 200,000 years
-
Slang usually has a short half-life. [=slang usually is popular for only a short time]
