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1. (n.) quaternary ammonium compound
any of a class of salts derived from ammonium in which the nitrogen atom is attached to four organic groups; used as antiseptics and disinfectants.
Etymology: (1815–25)
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| Definition of 'quaternary ammonium compound' |
Princeton's WordNet |
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1. (noun) quaternary ammonium compound
a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface-active agents, disinfectants, and in drugs
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Definitions of quaternary ammonium compound 
