›involving or affecting several different countries, organizations, etc.: Attempts to reach a comprehensive multilateral agreement with binding rules have thus far not been successful.The next round of multilateral negotiations will commence next month.Australia remains strongly committed to the multilateral trading system. → Comparebilateral, unilateral
multilaterally/ˌmʌltiˈlætərəli/adverb›Trading policies of individual WTO members are examined multilaterally by turn, and in depth.