trilateral
tri·lat·er·al
adj \(ˌ)trī-ˈla-tə-rəl, -ˈla-trəl\Definition of TRILATERAL
: having three sides or parties <trilateral business ventures> <trilateral discussions>
See Origin of TRILATERAL
Latin trilaterus, from tri- + later-, latus side
First Known Use: 1660
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