noun Date: circa 1934 any of numerous strong bases and their salts derived from ammonium by replacement of the hydrogen atoms with organic radicals and important especially as surface-active agents, disinfectants, and drugs
QUATERNARY AMMONIUM COMPOUND
Meaning of QUATERNARY AMMONIUM COMPOUND in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012