- of or involving more than two nations or parties: a multilateral pact
- having many sides
WordReference Random House Learner's Dictionary of American English © 2026
mul•ti•lat•er•al /ˌmʌltiˈlætərəl, ˌmʌltaɪ-/USA pronunciation
adj. involving more than two opposing sides:multilateral agreements to stop the spread of nuclear arms. See -lat-2.
WordReference Random House Unabridged Dictionary of American English © 2026- having several or many sides.
mul•ti•lat•er•al
(mul′ti lat′ər əl),USA pronunciation adj.
mul′ti•lat′er•al•ism, n.
mul′ti•lat′er•al•ist, adj., n.
mul′ti•lat′er•al•ly, adv.
- having several or many sides;
many-sided. - participated in by more than two nations, parties, etc.;
multipartite:multilateral agreements on disarmament.
- multi- + lateral 1690–1700
mul′ti•lat′er•al•ist, adj., n.
mul′ti•lat′er•al•ly, adv.
Collins Concise English Dictionary © HarperCollins Publishers::
multilateral /ˌmʌltɪˈlætərəl; -ˈlætrəl/ adj