Search Result for "atomic_number_89":
Wordnet 3.0

NOUN (1)

1. a radioactive element of the actinide series; found in uranium ores;
[syn: actinium, Ac, atomic number 89]



WordNet (r) 3.0 (2006):

atomic number 89
    n 1: a radioactive element of the actinide series; found in
         uranium ores [syn: actinium, Ac, atomic number 89]