National Security Agency(NSA)


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.

Dictionary Entries Near National Security Agency

Cite this Entry

“National Security Agency.” Legal Dictionary, Merriam-Webster, Accessed 15 Apr. 2024.

Love words? Need even more definitions?

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