stress test

noun

: an electrocardiographic test of heart function before, during, and after a controlled period of increasingly strenuous exercise (as on a treadmill)

Examples of stress test in a Sentence

Recent Examples on the Web
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At the same time, OpenAI had employed a contractor called Pattern Labs to stress test its AI models ahead of their public release to find and fix any vulnerabilities that could be exploited by hackers to steal user data or used as tools to harm others. Thomas Brewster, Forbes.com, 17 Sep. 2025 Paytient's Whorley calls the challenge of making GLP-1s more affordable a stress test moment for employers and PBMs. Bertha Coombs, CNBC, 11 Sep. 2025 My stress tests might also have overwhelmed the Skylo phone. PC Magazine, 5 Sep. 2025 For Brazil, the case is a stress test for its institutions. Julia Vargas Jones, CNN Money, 2 Sep. 2025 See All Example Sentences for stress test

Word History

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of stress test was in 1955

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Cite this Entry

“Stress test.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stress%20test. Accessed 20 Sep. 2025.

Medical Definition

stress test

noun
: an electrocardiographic test of heart function before, during, and after a controlled period of increasingly strenuous exercise (as on a treadmill)
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