Search Result for "atomic_number_86":
Wordnet 3.0

NOUN (1)

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]



WordNet (r) 3.0 (2006):

atomic number 86
    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]