counterintelligence

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noun coun·ter·in·tel·li·gence \ˌkau̇n-tər-in-ˈte-lə-jən(t)s\

Definition of counterintelligence

  1. :  organized activity of an intelligence service designed to block an enemy's sources of information, to deceive the enemy, to prevent sabotage, and to gather political and military information

Recent Examples of counterintelligence from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'counterintelligence'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of counterintelligence

1940


COUNTERINTELLIGENCE Defined for English Language Learners

counterintelligence

play
noun

Definition of counterintelligence for English Language Learners

  • : activity meant to hide the truth from an enemy or to prevent the enemy from learning secret information


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