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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - A radioactive gaseous element formed by the disintegration of radium.

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Usage examples (35)
  • The word radon will not appear in the Lung Cancer Mortality Reduction Act.
  • Free short-term radon test kits are available at the De Pere Health Department at 335 S. Broadway St.,
  • Checking for radon is an inexpensive task using one of the short- or long-term radon test kits we reviewed.
  • Checking for radon is an inexpensive task using one of the short - or long-term radon test kits we reviewed.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.