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Valid in these dictionaries

TWL/NWL (Scrabble US/CA/TH)
SOWPODS/CSW (Scrabble UK / ALL)
ENABLE (Words with Friends)

Meaning of radon

1 definition found

From WordNet (r) 3.0 (2006) [wn]:

  radon
      n 1: 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 [syn: {radon}, {Rn}, {atomic
           number 86}]

Source : WordNet ® Princeton University. 2010.

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OCTWL / TWL : The official dictionary for scrabble game in United States, Canada and Thailand.
SOWPODS / CSW : UK and the rest of the world uses this dictionary for various word games including scrabble.
ENABLE - This is the default dictionary for Words with Friends.

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