defense mechanism

noun

1
: an often unconscious mental process (such as repression) that makes possible compromise solutions to personal problems
2
: a defensive reaction by an organism

Examples of defense mechanism in a Sentence

She is projecting her anger on you as a defense mechanism. the cell's normal defense mechanisms against infection
Recent Examples on the Web Research has found that radishes help enhance the body's antioxidant defense mechanism and positively impact changes in blood glucose (sugar) levels. Cynthia Sass, Mph, Health, 13 Apr. 2024 And looking back, that was just a defense mechanism. Tricia Despres, Peoplemag, 22 Mar. 2024 To Improve Incident Response: Human intuition can be an effective defense mechanism. Stu Sjouwerman, Forbes, 23 Feb. 2024 Part of that Latin identity comes with a very macho culture, a defense mechanism to protect our families. Kyle Eustice, SPIN, 20 Mar. 2024 Nudibranchs have such good defense mechanisms—are so good at surviving, as Kirkendale put it—that other soft-bodied animals on the reef have evolved to copy them. Helen Sullivan, Smithsonian Magazine, 2 Apr. 2024 The need for a robust defense mechanism is straightforward. Eric Noonan, Fortune, 1 Mar. 2024 Meanwhile, other organisms, such as certain jellyfish and worms, deploy bioluminescence as a defense mechanism, releasing glowing particles to confuse and deter predators. Scott Travers, Forbes, 29 Feb. 2024 Anger is often described as a secondary response to underlying feelings, serving as a defense mechanism to shield ourselves from or conceal more vulnerable emotions such as hurt or fear. Mark Travers, Forbes, 20 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'defense mechanism.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1909, in the meaning defined at sense 1

Time Traveler
The first known use of defense mechanism was in 1909

Dictionary Entries Near defense mechanism

Cite this Entry

“Defense mechanism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/defense%20mechanism. Accessed 3 May. 2024.

Medical Definition

defense mechanism

noun
1
: an often unconscious mental process (as repression, projection, or sublimation) that makes possible compromise solutions to personal problems
2
: a defensive reaction by an organism

More from Merriam-Webster on defense mechanism

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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