Search Result for "quaternary ammonium compound":
Wordnet 3.0

NOUN (1)

1. a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface-active agents, disinfectants, and in drugs; 



WordNet (r) 3.0 (2006):

quaternary ammonium compound
    n 1: a compound derived from ammonium with hydrogen atoms
         replaced by organic groups; used as surface-active agents,
         disinfectants, and in drugs