Search Result for "atomic_number_90":
Wordnet 3.0

NOUN (1)

1. a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands;
[syn: thorium, Th, atomic number 90]



WordNet (r) 3.0 (2006):

atomic number 90
    n 1: a soft silvery-white tetravalent radioactive metallic
         element; isotope 232 is used as a power source in nuclear
         reactors; occurs in thorite and in monazite sands [syn:
         thorium, Th, atomic number 90]