Definition of radon
: a heavy radioactive gaseous element formed by the decay of radium — see element table
Recent Examples of radon from the Web
High levels of radon were found in some Centennial School District buildings, the district said this week.
Custom kitchen cabinetry with crown molding is also included along with a USB charging outlet in the kitchen, soft-close drawers and a passive radon ventilation system in every home.
This is a complication because the polonium and lead isotopes are part of the radon decay chain.
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Origin and Etymology of radon
International Scientific Vocabulary, from radium
First Known Use: 1918
RADON Defined for English Language Learners
Definition of radon for English Language Learners
: a radioactive element which is a gas that is used medically in cancer treatments
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