Definition of Atomic Number 61 in English :
Define Atomic Number 61 in English
Atomic Number 61 meaning in English
Meaning of Atomic Number 61 in English
Pronunciation of Atomic Number 61 in English
Atomic Number 61 pronunciation in English
Pronounce Atomic Number 61 in English
Atomic Number 61
see synonyms of atomic number 61Noun
1. atomic number 61, pm, promethium
a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium
WordNet Lexical Database for English. Princeton University. 2010.