stressor

noun

stress·​or ˈstre-sər How to pronounce stressor (audio) -ˌsȯr How to pronounce stressor (audio)
: a stimulus that causes stress

Examples of stressor in a Sentence

Credit card debt is a major stressor in her life.
Recent Examples on the Web
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Its proprietary antioxidant is almost four times stronger than vitamin C, which helps defend against the everyday stressors (UV, pollution, and other environmental damage) that break down collagen and speed up visible aging. Christa Joanna Lee, Allure, 23 Jan. 2026 Environmental stressors are another factor. Jacqueline Kilikita, Refinery29, 20 Jan. 2026 While Blue Monday isn’t a diagnosis, its underlying factors mirror real stressors associated with seasonal mood swings. Jamie Cuccinelli, Martha Stewart, 19 Jan. 2026 The group is flexible enough to provide not only competition opportunities around the world but also a dose of aloha spirit amid life’s stressors for longtime practitioners, some of whom are also parents to a next generation of hula dancers. Kate Bradshaw, Mercury News, 18 Jan. 2026 See All Example Sentences for stressor

Word History

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of stressor was in 1950

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Cite this Entry

“Stressor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stressor. Accessed 29 Jan. 2026.

Medical Definition

stressor

noun
stress·​or ˈstres-ər How to pronounce stressor (audio) -ˌȯ(ə)r How to pronounce stressor (audio)
: a stimulus that causes stress
psychological stressors
Last Updated: - Updated example sentences
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