Search Result for "atomic number 87":
Wordnet 3.0

NOUN (1)

1. a radioactive element of the alkali-metal group discovered as a disintegration product of actinium;
[syn: francium, Fr, atomic number 87]



WordNet (r) 3.0 (2006):

atomic number 87
    n 1: a radioactive element of the alkali-metal group discovered
         as a disintegration product of actinium [syn: francium,
         Fr, atomic number 87]