Meanings
nounquaternary ammonium (countable and uncountable, plural quaternary ammoniums)
plural quaternary ammoniums
- countableuncountablechemistryAn ammonium group in which each hydrogen has been replaced by an alkyl or aryl group
Synonyms: quat, quaternary amine, quaternium
Synonyms & antonyms
nounAn ammonium group in which each hydrogen has been replaced by an alkyl or aryl group
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Cite this entry
APA
quaternary ammonium. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/quaternary%20ammonium
MLA
“quaternary ammonium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/quaternary%20ammonium. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “quaternary ammonium,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/quaternary%20ammonium.
Source: quaternary ammonium on Wiktionary, CC BY-SA 4.0.