radiotracer

noun
ra·dio·trac·er | \ˈrā-dē-ō-ˌtrā-sər \

Definition of radiotracer 

: a radioactive tracer

First Known Use of radiotracer

1946, in the meaning defined above

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The first known use of radiotracer was in 1946

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radiotracer

noun
ra·dio·trac·er | \ˈrād-ē-ō-ˌtrā-sər \

Medical Definition of radiotracer 

: a radioactive tracer

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