Eka-actinium

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    unbiunium (element 121) uncountable
  2. 2
    untriennium (dvi-lanthanum) (element 139) uncountable

Synonyms

All synonyms
unbiunium

Etymology

From eka- + actinium.

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