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NSA

American  
Or N.S.A.

abbreviation

  1. National Security Agency.

  2. National Shipping Authority.

  3. National Standards Association.

  4. National Student Association.

  5. negative security assurance.

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.

By 26, he was breaking Russian codes for the NSA during the Cold War.

From MarketWatch • Nov. 15, 2025

The ministry accused the NSA of exploiting weaknesses in the messaging service of an unspecified foreign mobile phone brand in order to steal login credentials from employees at the time centre.

From Barron's • Oct. 19, 2025

My FBI file alone is more than an inch thick, and I was never able to get my hands on files kept on me by military intelligence, the CIA and NSA.

From Salon • May 6, 2025

To have the designation, the programs have to meet the NSA requirements for educational content and quality.

From Science Daily • May 6, 2024

Looking for other ways to keep William’s name alive, Elizebeth recorded interviews with the Marshall Library and NSA historians.

From "The Woman All Spies Fear" by Amy Butler Greenfield

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.