Electrophoretic separation technique in a discontinuous buffer system in which analytes migrate according to their electrophoretic mobilities, forming a chain of adjacent zones moving with equal speed (velocity) between two solutions, leading and terminating electrolytes, bracketing the mobility range of the analytes.
Source:
PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 214 (https://doi.org/10.1515/pac-2017-0111)