countermeasure
noun
coun·ter·mea·sure
ˈkau̇n-tər-ˌme-zhər 
-ˌmā-
: an action or device designed to negate or offset another
The most well-known countermeasure by a physician is a malicious-persecution suit against the lawyer who sued him and failed to prove a case.—
William J. Curran
William J. CurranThe Germans had developed a tricky magnetic mine, but the British had developed a countermeasure for this even before the mine was used.—Bernard Brodie and Fawn M. Brodie
Bernard Brodie and Fawn M. Brodie
especially
: electronic countermeasure
Examples of countermeasure in a Sentence
Recent Examples on the Web
Traditional submarine detection methods like sonar, radar, or magnetic detection, for example, can be, in part, defeated with the right countermeasures.
—Christopher McFadden, Interesting Engineering, 4 Apr. 2026
And that gives Tehran many more incentives – and in many cases very effective countermeasures – through which to fight on.
—Will Walldorf, The Conversation, 1 Apr. 2026
Drone countermeasures need to be relatively cheap to be viable.
—Brynn Tannehill, The Atlantic, 31 Mar. 2026
Such forms of electronic interference are increasingly being deployed as defensive countermeasures in modern warfare — similar disruptions followed Russia's invasion of Ukraine in 2022, according to a CSIS report.
—Matthew Chin, CNBC, 26 Mar. 2026
See All Example Sentences for countermeasure
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Christopher McFadden, Interesting Engineering, 4 Apr. 2026
And that gives Tehran many more incentives – and in many cases very effective countermeasures – through which to fight on.
—Will Walldorf, The Conversation, 1 Apr. 2026
Drone countermeasures need to be relatively cheap to be viable.
—Brynn Tannehill, The Atlantic, 31 Mar. 2026
Such forms of electronic interference are increasingly being deployed as defensive countermeasures in modern warfare — similar disruptions followed Russia's invasion of Ukraine in 2022, according to a CSIS report.
—Matthew Chin, CNBC, 26 Mar. 2026
See All Example Sentences for countermeasure
Cite this Entry
“Countermeasure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countermeasure. Accessed 6 Apr. 2026.
Copy CitationKids Definition
countermeasure
noun
coun·ter·mea·sure
ˈkau̇nt-ər-ˌmezh-ər
-ˌmāzh-
: an action or device designed to counteract another
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