Meanings
nounprometheum (uncountable)
- uncountableA rejected name for the chemical element promethium.
Cite this entry
APA
prometheum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/prometheum
MLA
“prometheum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/prometheum. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “prometheum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/prometheum.
Source: prometheum on Wiktionary, CC BY-SA 4.0.