An electrically charged particle built up from polymeric molecules or ions and occurring in certain colloidal electrolytic solutions like soaps and detergents

Wikipedia Word definitions in Wikipedia
A micelle or micella (plural micelles or micellae , respectively) is an aggregate (or supramolecular assembly ) of surfactant molecules dispersed in a liquid colloid . A typical micelle in aqueous solution forms an aggregate with the hydrophilic "head" ...

Wiktionary Word definitions in Wiktionary
n. a colloidal aggregate, in a simple geometric form, of a specific number of amphipathic molecules which forms at a well-defined concentration, called the critical micelle concentration

WordNet Word definitions in WordNet
n. an electrically charged particle built up from polymeric molecules or ions and occurring in certain colloidal electrolytic solutions like soaps and detergents