zaibatsu
From Longman Business Dictionaryzaibatsuzai‧bat‧su /zaɪˈbætsuː/ noun (plural zaibatsu or zaibatsus) [countable]ORGANIZATIONS in Japan in former times, a group of related companies often owned by members of the same family, with a bank at its centre in which the companies owned sharesThe group comprised one of the three most powerful zaibatsu before and during the war. → compare keiretsu