Home › Words › R › retromigrationretromigrationretromigration means migration back again; migration in the opposite direction.Among words judged in Lexicurio's Arena, retromigration ranks #16,733 of 42,747 for Qualifying.EtymologyFrom retro- + migration.nounMigration back again; migration in the opposite direction.Definitions & examples from Wiktionary (CC BY-SA 3.0).