RADON


Meaning of RADON in English

/ray"don/ , n. Chem.

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.

[ 1915-20; RAD(IUM) + -ON 2 ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .