Meanings
noununtrioctium (uncountable)
- uncountableThe systematic element name for the (as yet undiscovered) chemical element with atomic number 138 (symbol Uto).
Origin
Systematic element name, from un- + tri- + oct- + -ium.
Full word history & related roots →Cite this entry
APA
untrioctium. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/untrioctium
MLA
“untrioctium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/untrioctium. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “untrioctium,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/untrioctium.
Source: untrioctium on Wiktionary, CC BY-SA 4.0.