[trahy-lat-er-uh l]


having three sides.

Origin of trilateral

1650–60; < Latin trilater(us) three-sided + -al1. See tri-, lateral
Related formstri·lat·er·al·i·ty, nountri·lat·er·al·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trilateral

Contemporary Examples of trilateral

Historical Examples of trilateral

British Dictionary definitions for trilateral



having three sides
Derived Formstrilaterally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for trilateral

1650s, from Latin trilaterus "three-sided;" see tri- + lateral. The Trilateral Commission (representing Japan, the U.S., and Europe) was founded 1973.

Online Etymology Dictionary, © 2010 Douglas Harper