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radon > pronunciation
Soundsrey'daa.n
RhymesAgamemnon, aileron, amazon / Amazon, and 138 more rhymes in aan...
radon > noun, substance
MeaningA 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.
SynonymsRn, atomic number 86
Broaderchemical element, element; noble gas, inert gas, argonon

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