Unbiunium

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The systematic element name for the (as yet undiscovered) chemical element with atomic number 121 (symbol Ubu). uncountable

Synonyms

All synonyms
eka actiniumeka-actiniumelement 121

Etymology

Systematic element name from un- + bi- + un- + -ium.

Related phrases

atomic numbersystematic element name

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.