radon

noun ra·don \ ˈrā-ˌdän \
Updated on: 15 Nov 2017

Definition of radon

: a heavy radioactive gaseous element formed by the decay of radium — see Chemical Elements Table

Recent Examples of radon from the Web

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Origin and Etymology of radon

International Scientific Vocabulary, from radium


RADON Defined for English Language Learners

radon

noun

Definition of radon for English Language Learners

  • : a radioactive element which is a gas that is used medically in cancer treatments


Medical Dictionary

radon

noun ra·don \ ˈrā-dän \

medical 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 Chemical Elements Table


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