Meanings
nounmeitnium (uncountable)
- uncountablechemistry(obsolete) A rejected name for protactinium.
Origin
From Meitner + -ium, after Lise Meitner, after whom the element meitnerium was later named.
Full word history & related roots →Cite this entry
APA
meitnium. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/meitnium
MLA
“meitnium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/meitnium. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “meitnium,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/meitnium.
Source: meitnium on Wiktionary, CC BY-SA 4.0.