Search Result for "atomic number 2":
Wordnet 3.0

NOUN (1)

1. a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas);
[syn: helium, He, atomic number 2]



WordNet (r) 3.0 (2006):

atomic number 2
    n 1: a very light colorless element that is one of the six inert
         gasses; the most difficult gas to liquefy; occurs in
         economically extractable amounts in certain natural gases
         (as those found in Texas and Kansas) [syn: helium, He,
         atomic number 2]