English

Noun

quaternary ammonium compound ‎(plural quaternary ammonium compounds)

1. (chemistry) An amine derivative, containing four radicals, of general formula R₁R₂R₃R₄-N⁺X^-; the radicals may be the same, different, or part of a ring; X is any univalent anion such as OH^-.

Related terms

• primary amine
• secondary amine
• tertiary amine