Quaternium

//kwəˈtɜː.ni.əm// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A quaternary ammonium functional group
  2. 2
    A quaternary ammonium cation
  3. 3
    A quaternary ammonium compound

Synonyms

All synonyms
quatquaternary ammonium

Etymology

Blend of quaternary + ammonium. From quaternary ammonium.

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