Definition of trilateral in US English:

trilateral

adjective

  • 1Shared by or involving three parties.

    ‘trilateral negotiations’
    • ‘So can I take you back a bit to talk a bit more, if you wouldn't mind, about that sort of trilateral relationship - Washington, Canberra, London - that's developed.’
    • ‘This led to President Jimmy Carter's invitation to President Sadat and Prime Minister Begin to join him in trilateral negotiations at Camp David.’
    • ‘It is not without reason that China is serving as the host of the ongoing trilateral negotiations between the US, China and North Korea in Beijing.’
    • ‘Bulgaria, Greece and Russia signed on April 12 a trilateral memorandum on the construction of the Bourgas-Alexandroupolis oil pipeline.’
    • ‘We, after all, have a trilateral commission, between Pakistan, Afghanistan and the United States to share intelligence along the border regions.’
    • ‘As part of the trilateral summit, Purvanov discussed the political and economic relations between Bulgaria and Greece at his meeting with Simitis on Friday.’
    • ‘The latter two demand a trilateral agreement over the share of the waters, and, indeed, representatives of the three countries have met several times for this purpose.’
    • ‘With a total population of 1.3 billion people in these countries, the IBSA initiative promises huge benefits in trilateral exchange as a south-south free trade zone emerges.’
    • ‘The Russian president chose Kaliningrad for a trilateral meeting!’
    • ‘The trilateral memorandum for the construction of the oil pipeline will be signed in Sofia by April 15, a tripartite committee of Bulgaria, Russia, and Greece has decided in Moscow.’
    • ‘The commitments of Labour and Social Policy Ministry under this agreement include that it motion amendments to labour legislation after trilateral negotiations.’
    • ‘Indonesia, Malaysia and the Philippines sealed a trilateral security pact on Tuesday in an attempt to bolster cooperation to combat terrorism and cross-border crime.’
    • ‘Rome and Madrid were hardly enthusiastic about the trilateral meeting in Berlin, although it was billed as ‘informal.’’
    • ‘The two heads of state discussed the idea of a trilateral meeting at which the presidents of Bulgaria, Albania and Macedonia would discuss all matters related to Corridor VIII.’
    • ‘However, the disputed 5000 square kilometer territory of the State ceded by Pakistan to China has to be subjected to trilateral talks - China, Pakistan and India for a final resolution.’
    • ‘She said when she met Thai Prime Minister Thaksin Shinawatra Tuesday evening, the Thai leader agreed to join the trilateral pact as the fourth party.’
    • ‘While officials predicted ‘little concrete progress’ from yesterday's trilateral meetings, a deadline of sorts was given.’
    • ‘Bilateral agreements were also signed such as those between Chile and Argentina, and between Mexico and Venezuela, as well as the trilateral agreement involving Venezuela, Argentina and Mexico.’
    • ‘A provision to this effect is available in a draft trilateral agreement on cooperation in the transportation of nuclear materials, which was approved by the Council of Ministers last Thursday.’
    • ‘A source familiar with the trilateral meeting said the three countries decided to reject North Korea's call for including energy and economic assistance to Pyongyang in the envisaged statement.’
    1. 1.1Geometry Of, on, or with three sides.
      • ‘Of trilateral figures, an equilateral triangle is that which has its three sides equal, an isosceles triangle, that which has two of its sides equal, and a scalene triangle, that which has its three sides unequal.’
      • ‘Yet the trilateral filter requires only one user-set parameter.’

noun

  • A triangle.

    • ‘By the pivoting of the deformable quadrilaterals, the trilaterals are raised and maintain the uprights.’
    • ‘Let two arcs be drawn from the vertex of a trilateral to points on the base.’

Pronunciation