Economic Definition of multilateral. Defined.
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Term multilateral Definition: An action, often used in terms of an international trade agreement, that's extended to more than two parties. As such, a multilateral trade agreement is between several countries. For example, the United States might enter into a multilateral agreement with every country in North and South America that reduces trade barriers on the exports and imports of food products. The General Agreement on Tariffs and Trade is one of the more well known examples of a multilateral trade agreement.