| 1. | an international organization, with headquarters in New York City, formed to promote international peace, security, and cooperation under the terms of the charter signed by 51 founding countries in San Francisco in 1945. Abbreviation: UN Compare General Assembly, Security Council. |
| 2. | the nations that signed the joint declaration in Washington, D.C., January 2, 1942, pledging to employ full resources against the Axis powers, not to make a separate peace, etc. |
| United Nations Abbr. UN An international organization composed of most of the countries of the world. It was founded in 1945 to promote peace, security, and economic development. |