Definition of radon
: a heavy radioactive gaseous element formed by the decay of radium — see element table
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Origin and Etymology of radon
International Scientific Vocabulary, from radium
First Known Use: 1918
RADON Defined for English Language Learners
radon
playDefinition of radon for English Language Learners
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: a radioactive element which is a gas that is used medically in cancer treatments
Medical Dictionary
radon
playMedical Definition of radon
: a heavy radioactive gaseous element of the group of inert gases formed by disintegration of radium and used similarly to radium in medicine—symbol Rn; called also radium emanation; see element table
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See words that rhyme with radon Spanish Central: Translation of radon Nglish: Translation of radon for Spanish speakers Britannica English: Translation of radon for Arabic speakers Britannica.com: Encyclopedia article about radon
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