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radioactive

ra·di·o·ac·tive

radioactive

 
pronunciation:
reI di o aek tihv
features:
Word Explorer, Word Parts
part of speech: adjective
definition 1: emitting energy or subatomic particles as a result of the decay of unstable isotopes.
definition 2: of or pertaining to an unstable isotope or instruments used to handle unstable isotopes.
derivation: radioactively (adv.)
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Word Parts
The word radioactive contains the following parts:
radi Latin root that means ray, spoke