Involving, relating to, or shared by two nations or nationalities.
From 'bi-' (two) + 'national' (relating to a nation). This compound word emerged in the 20th century as nations increasingly cooperated on shared issues like trade, environment, and security.
Binational has become increasingly important as countries share rivers, airspace, and supply chains—the U.S.-Mexico border is literally a binational zone, and many families are binational themselves. The word reflects our modern world where national borders are less like walls and more like places where cultures meet.
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