United States Air Force

American

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. USAF

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He served for 25 years in the United States Air Force.

From Slate • Oct. 15, 2025

Campaigners have called for government "transparency" amid reports the United States Air Force has moved nuclear weapons to a Suffolk airbase.

From BBC • Jul. 23, 2025

By 1947, Congress provided the funding to establish the United States Air Force as a separate military branch, investing in more pilots and planes.

From Seattle Times • Apr. 13, 2024

He tripped and fell on stage after addressing graduates at the United States Air Force Academy on Thursday.

From Los Angeles Times • Jun. 2, 2023

One year later, the importance of the airplane to US defense was underscored when the Army Air Corps was elevated to the status of an independent branch of the military: the United States Air Force.

From "Hidden Figures" by Margot Lee Shetterly

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023