Exactinio

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Synonym of actinon (“radon-219”). obsolete, uncountable

Synonyms

All synonyms
actinon

Etymology

From Latin ex actīniō (“out of actinium”).

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