Dictionary

trilateral

adjective tri·lat·er·al \(ˌ)trī-ˈla-tə-rəl, -ˈla-trəl\

: involving three groups or countries

Full Definition of TRILATERAL

:  having three sides or parties <trilateral business ventures> <trilateral discussions>

Origin of TRILATERAL

Latin trilaterus, from tri- + later-, latus side
First Known Use: 1660

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