electrophoresisPronunciation: /ɪˌlɛktrə(ʊ)fəˈriːsɪs/Definition of electrophoresis noun [mass noun] Physics & Chemistry the movement of charged particles in a fluid or gel under the influence of an electric field. Derivatives electrophorese verb electrophoreticPronunciation: /-fəˈrɛtɪk/ adjective electrophoretically adverb Origin: early 20th century: from electro- + Greek phorēsis 'being carried'electrophoresis in other Oxford dictionaries Definition of electrophoresis in the US English dictionary