tri·​lat·​er·​al | \ (ˌ)trī-ˈla-tə-rəl How to pronounce trilateral (audio) , -ˈla-trəl \

Definition of trilateral

: having three sides or parties trilateral business ventures trilateral discussions

Examples of trilateral in a Sentence

Recent Examples on the Web Following talks in Warsaw with Polish President Andrzej Duda, Macron also called for a revival of trilateral ties with Germany, urging a summit meeting before the summer, following years of hiatus. Washington Post, "France’s Macron wants closer ties with Poland on EU," 3 Feb. 2020 Someday, a trilateral treaty may be necessary and achievable; meanwhile, confidence embodied in verifiable arms-control agreements between the two nuclear superpowers must be preserved. Jessica T. Mathews, The New York Review of Books, "Do the Democrats Have a Foreign Policy?," 16 Jan. 2020 The drill, which is to start on Saturday, will be the first such trilateral exercise as Tehran seeks to boost military cooperation with Beijing and Moscow amid unprecedented economic sanctions from Washington. CBS News, "Iran, Russia and China team up for military drills as America boosts troops in Saudi Arabia," 25 Dec. 2019 Lavrov noted China’s concerns but said Russia is open to a trilateral arrangement. John Hudson, Washington Post, "Pompeo and Lavrov clash over Russian election interference in news conference at State Department," 10 Dec. 2019 If trilateral strategic nuclear arms control is of interest, the three countries will have to start from scratch. Ankit Panda, The New Republic, "Trump’s Nuclear China Option," 30 Sep. 2019 Even after that, Japan and South Korea will still have access to each other’s intelligence through a trilateral agreement with America. The Economist, "An old grudge between Japan and South Korea is getting out of hand," 29 Aug. 2019 The United States, which wants stronger trilateral security cooperation with Seoul and Tokyo, expressed disappointment at the South Korean decision. Washington Post, "N. Korea test-fires missiles again after joint drills end," 25 Aug. 2019 Opening that trilateral meeting in Jerusalem, Prime Minister Benjamin Netanyahu of Israel pressed for the withdrawal of all foreign forces from Syria, in particular those of Iran and Iranian proxies near the frontier with Israel. Isabel Kershner,, "Israel is blamed for deadly missile strikes in Syria," 1 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trilateral.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of trilateral

1660, in the meaning defined above

History and Etymology for trilateral

Latin trilaterus, from tri- + later-, latus side

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Time Traveler for trilateral

Time Traveler

The first known use of trilateral was in 1660

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Statistics for trilateral

Last Updated

11 Feb 2020

Cite this Entry

“Trilateral.” Dictionary, Merriam-Webster, Accessed 28 Feb. 2020.

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How to pronounce trilateral (audio)

English Language Learners Definition of trilateral

: involving three groups or countries

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Britannica English: Translation of trilateral for Arabic Speakers

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