Definition of promethium Promethium

/pɹʌmiˈθiʌm/ - [prumeetheeum] - pro•me•thi•um

We found 5 definitions of promethium from 5 different sources.

What does promethium mean?

WordNet

Noun

Plural: promethiums

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

Pm, atomic number 61

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Wiktionary

promethium (Noun)
A metallic chemical element symbol Pm with an atomic number of 61.

OmegaWiki DictionaryOmegaWiki Dictionary Ω

promethium
Chemical element with symbol Pm and atomic number 61, silvery white radioactive lanthanide.

Wikipedia

Promethium is a chemical element that has the symbol Pm on the periodic table. It has the atomic number 61 which means it has 61 protons in its atom.