Definition of radon
: a heavy radioactive gaseous element formed by the decay of radium — see element table
Recent Examples of radon from the Web
The Estill County dump that accepted radioactive waste has agreed to install monitors, fund school radon testing and develop a corrective action plan, under an agreement with the Kentucky Energy and Environment Cabinet announced in November.
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.
Dozens of other programs also would be zeroed out entirely, including funding for radon detection, lead risk reduction, projects along the U.S.-Mexico border and environmental justice initiatives.
Some of those categories have been zeroed out entirely, including beach protection, radon monitoring and lead testing, the documents show.
The budget would also zero out money for states for dealing with such problems as non-point source pollution, radon, lead, underground storage tanks, pollution prevention and beach protection.
The old station has mold, water damage and radon gas levels five times higher than normal.
This would explain why a family of four living in a home with elevated radon levels might not all face the same risk.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of radon
International Scientific Vocabulary, from radium
First Known Use: 1918See Words from the same year
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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