Wiktionary
anionic detergent
n. (context chemistry English) Any detergent in which the lipophilic part of the molecule is an anion; examples include soaps and sunthetic long-chain sulfates and sulfonates
WordNet
anionic detergent
n. a class of synthetic detergents in which the molecules do not ionize in aqueous solutions [syn: anionic, non-ionic detergent]