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Synonyms

trilateral

American  
[trahy-lat-er-uhl] / traɪˈlæt ər əl /

adjective

  1. having three sides.


trilateral British  
/ traɪˈlætərəl /

adjective

  1. having three sides

"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

Other Word Forms

  • trilaterality noun
  • trilaterally adverb

Etymology

Origin of trilateral

1650–60; < Latin trilater ( us ) three-sided + -al 1. See tri-, lateral

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

During the historic face-to-face trilateral talks, Munir and Pakistani Foreign Minister Ishaq Dar helped "mediate" the talks, as per the civilian official.

From Barron's • Apr. 12, 2026

A planned trilateral meeting involving Ukraine, the United States and Russia was postponed as Washington focused on developments in the Middle East, he said.

From Salon • Mar. 15, 2026

In January, Beijing, Moscow and Tehran formed a trilateral security pact for deepened diplomatic, economic and security cooperation.

From The Wall Street Journal • Mar. 10, 2026

"I'm not pessimistic about the trilateral framework renewing," LeBlanc told the Canadian Club of Toronto, referring to the United States-Mexico-Canada agreement, which Trump signed and praised during his first term.

From Barron's • Feb. 26, 2026

But a little reflection will make it evident that in thinking the idea of triangle, we think nothing unless we at least think the plane trilateral figure.

From The Reform of Education by Gentile, Giovanni