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See entries that contain "radioactivity"
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radioactivity
ra·di·o·ac·tiv·i·ty
radioactivity
pronunciation:
reI
di
o
aek
tI
vih
ti
features:
Word Explorer
part of speech:
noun
definition:
the giving off of energy as a result of the decay of unstable atoms.
Uranium has a high level of radioactivity.
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measurement
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