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radon

 
Noun radon has 1 sense
  1. radon, Rn, atomic number 86 - a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
    --1 is a kind of chemical element, element; noble gas, inert gas, argonon
radius of curvature radius vector radix radlett radness radoisotopes radom radome radon radonteur radoslav radoslaw radovan radsome radu radula radyera

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