multinational adjective 2noun 1forms 1 adjective2 •Of, or involving more than two nations (externally between countries or internally in a country). •Operating, or having subsidiary companies in multiple countries (especially more than two).By operating within many nations, but ouside them at the same time, multinational firms create possibilities of change even in the world political structure — 1970 noun1 •A multinational company.The G8 leaders also called on multinationals to make a full disclosure to the taxman over how much tax they pay in different countries. — 2013 formsmultinationals