National Security Agency(NSA)

Agency

Legal Definition of National Security Agency

Defense Department agency charged with carrying out U.S. communications-security and intelligence-gathering activities. Besides prescribing and overseeing certain security principles and procedures for the U.S. government, and conducting certain foreign intelligence operations, the NSA regulates certain communications channels and operates a national computer security center in support of its defense mission.

Learn More about National Security Agency

Cite this Entry

“National Security Agency.” Merriam-Webster.com Legal Dictionary, Merriam-Webster, https://www.merriam-webster.com/legal/National%20Security%20Agency. Accessed 25 Feb. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on National Security Agency

What made you want to look up National Security Agency? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
 AlphaBear 2

Spell words. Make bears.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!