conglomerateur

[ kuh n-glom-er-uh-tur, kuh ng- ]
/ kənˌglɒm ər əˈtɜr, kəŋ- /

noun

a person who forms a corporate conglomerate by acquiring a group of companies, services, etc.
Also con·glom·er·a·tor [kuh n-glom-uh-rey-ter, kuh ng-] /kənˈglɒm əˌreɪ tər, kəŋ-/.

Origin of conglomerateur

1965–70; conglomerate + -eur, probably extracted from entrepreneur