bel: радон

Information
has URI	http://lexvo.org/id/term/bel/%D1%80%D0%B0%D0%B4%D0%BE%D0%BD

Meaning
means	(noun) 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 Rn, radon, atomic number 86