Meanings
noununtriunium (uncountable)
- uncountableThe systematic element name for the (as yet undiscovered) chemical element with atomic number 131 (symbol Utu).
Origin
Systematic element name, from un- + tri- + un- + -ium.
Full word history & related roots →Cite this entry
APA
untriunium. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/untriunium
MLA
“untriunium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/untriunium. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “untriunium,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/untriunium.
Source: untriunium on Wiktionary, CC BY-SA 4.0.