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Definition of radioisotope noun from the Oxford Advanced Learner's Dictionary

radioisotope

noun

/ˌreɪdiəʊˈaɪsətəʊp/

/ˌreɪdiəʊˈaɪsətəʊp/

(chemistry)

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a form of a chemical element which sends out radiation

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See radioisotope in the Oxford Advanced American Dictionary

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