United States Air Force
–noun
| the permanent or regular military air force of the United States, established in 1947 as a separate service under the authority of the Department of Defense: a branch of the U.S. Army before 1947. Abbreviation: USAF |
| Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
United States Air Force
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| © 2008 Encyclopædia Britannica, Inc. |
| united states air force | |
noun | |
| the airforce of the United States of America; the agency that defends the United States through control and exploitation of air and space |
| WordNet® 3.0, © 2006 by Princeton University. |
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