coun·​ter·​mea·​sure | \ ˈkau̇n-tər-ˌme-zhər How to pronounce countermeasure (audio) , -ˌmā- \

Definition of countermeasure

: 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 The 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 especially : electronic countermeasure

Examples of countermeasure in a Sentence

Recent Examples on the Web As an immediate countermeasure, the university dispatched minders to classrooms. Zeynep Tufekci, The Atlantic, "The Pandemic Is No Excuse to Surveil Students," 4 Sep. 2020 In the search for such a countermeasure, monoclonal antibodies, a Nobel Prize-winning biotechnology invented in the 1970s, have become the first line of attack, pursued by at least 50 companies and academic teams. Carolyn Y. Johnson, Anchorage Daily News, "These laboratory-made antibodies are a best bet for a coronavirus treatment, but there won’t be enough," 1 Oct. 2020 Meanwhile, as a countermeasure, the silo was filling with water to douse potential flames and dilute the vapor. Vince Guerrieri, Popular Mechanics, "40 Years Ago, We Almost Blew Up Arkansas," 18 Sep. 2020 The risk is that the government goes all-in on this one theatrical countermeasure, without addressing the systemic problems that made the U.S. so vulnerable, or investing in the testing and tracing strategies that will still be necessary. Ed Yong, The Atlantic, "The Pandemic Is an Intuition Nightmare," 9 Sep. 2020 Probably not a bad idea, either, to have a strong countermeasure for tight ends in a division that features bona fide threats in Travis Kelce (Chiefs) and Hunter Henry (Chargers) as well as an emerging talent in Noah Fant (Broncos). Michael Middlehurst-schwartz, USA TODAY, "Earl Thomas landing spots: Will Cowboys finally 'come get' ex-Ravens safety?," 24 Aug. 2020 The history of hacking has largely been a back-and-forth game, with attackers devising a technique to breach a system, defenders constructing a countermeasure that prevents the technique, and hackers devising a new way to bypass system security. Dan Goodin, Ars Technica, "Intel will soon bake anti-malware defenses directly into its CPUs," 15 June 2020 China has threatened the US with countermeasures if Washington decides to punish Beijing for its plans to enact the national security law, saying other countries have no right to interfere with Hong Kong’s internal affairs. Mary Hui, Quartz, "Hong Kong’s special status is hanging by a thread," 27 May 2020 Much of the effort and money – an annual budget of around $600 million – involved in maintaining the Strategic National Stockpile is devoted to ensuring that these biomedical countermeasures are stored properly and kept up-to-date. Andrew Lakoff, The Conversation, "Coronavirus: Strategic National Stockpile was ready, but not for this," 2 Apr. 2020

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

See More

First Known Use of countermeasure

1923, in the meaning defined above

Keep scrolling for more

Learn More about countermeasure

Time Traveler for countermeasure

Time Traveler

The first known use of countermeasure was in 1923

See more words from the same year

Statistics for countermeasure

Last Updated

20 Oct 2020

Cite this Entry

“Countermeasure.” Dictionary, Merriam-Webster, Accessed 27 Nov. 2020.

Keep scrolling for more

More Definitions for countermeasure


How to pronounce countermeasure (audio)

English Language Learners Definition of countermeasure

: an action or device that is intended to stop or prevent something bad or dangerous

Keep scrolling for more

Comments on countermeasure

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


Test Your Vocabulary

A Thanksgiving Word Quiz

  • a traditional thanksgiving dinner
  • November comes from a word for which of the following numbers?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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