The predominant formation of the same stereoisomer or stereoisomer mixture of a reaction product when two different stereoisomer of the reactant are used in the same reaction. When that product involved in the reaction is one enantiomer the result has been called enantioconvergence.
Source:
PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2218 (https://doi.org/10.1351/pac199668122193)