Definitions for



Overview of noun promethium

The noun promethium has 1 senses? (no senses from tagged texts)
1. promethium, Pm, atomic number 61

(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)


Synonym.com © 2001-2013, Demand Media, all rights reserved. The database is based on Word Net a lexical database for the English language. see disclaimer
Classroom | Privacy Policy | Terms | Ad Choices