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1. (n.) radon
a chemically inert, radioactive gaseous element produced by the decay of radium: emissions produced by outgassing of rock, brick, etc., are a health hazard. Symbol: Rn; at. no.: 86; at. wt.: 222.
Etymology: (< G
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| Definition of 'Radon' |
Princeton's WordNet |
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1. (noun) 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
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| Definition of 'Radon' |
U.S. National Library of Medicine |
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1. Radon
Radon. A naturally radioactive element with atomic symbol Rn, atomic number 86, and atomic weight 222. It is a member of the noble gas family and released during the decay of radium and found in soil. There is a link between exposure to radon and lung cancer.
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Definitions of Radon 
