trilateral

T1R1I1L1A1T1E1R1A1L1
US/ˌtrɪˈlæ.təɹ.əl/US[ˌtrɪˈlæ.ɾɚ.əl]

adjective

Having three sides

“The trilateral peace conference, between the red faction, blue faction and white faction, went nowhere.”

UncommonScrabble 10

Meanings

adjectivetrilateral (not comparable)
  1. not comparableHaving three sides
  2. not comparableInvolving three parties

    The trilateral peace conference, between the red faction, blue faction and white faction, went nowhere.

    2 more examples

    Meanwhile, a trilateral agreement has been signed with the French and Irish governments committing the nations to keeping freight routes open throughout the pandemic.

    2020 May 6, “Network News: Shapps: Network Rail puts spare capacity to use”, in Rail, page 15

    Hours later, answering journalists’ questions via a WhatsApp chat, Mr. Zelenskyy said the Trump administration had floated a trilateral meeting in Miami involving the U.S., Ukraine, and Russia.

    2025 December 20, The Associated Press, “Russia strikes Ukrainian port as peace negotiations continue in US”, in The Christian Science Monitor

Synonyms & antonyms

adjectiveinvolving three parties

adjectivehaving three sides

nouna three-sided polygon

Broader
polygonpolygonal shape

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. New Latintrilaterālis
  2. Englishtrilateral

Borrowed from New Latin trilaterālis or from tri- + lateral.

Full word history & related roots →

Translations

Bulgarian тристранен
  • тристранен (tristranen)Translations
German trilateral
  • trilateralTranslations
Russian трёхсторо́нний
  • трёхсторо́нний (trjoxstorónnij)Translations

Rhymes & wordplay

Rhymes with trilateral

All rhymes →
Cite this entry
APA

trilateral. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/trilateral

MLA

“trilateral.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trilateral. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “trilateral,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/trilateral.

Source: trilateral on Wiktionary, CC BY-SA 4.0.