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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Who Should Avoid Sauna Use Heat is a genuine cardiovascular stressor. Allison Palmer, Fort Worth Star-Telegram, 23 June 2026 Today’s formulas also address redness, dehydration, hyperpigmentation and environmental stressors. Kate Donnelly, Forbes.com, 23 June 2026 But according to recent research, some of those dads have resorted to eating their clutches, possibly in response to environmental stressors such as water pollution or vegetation loss, as Scientific American reported in 2023. Jackie Flynn Mogensen, Scientific American, 21 June 2026 The star ingredient is rice extract sourced from the nutrient-rich outer layer of rice, which contains antioxidants like vitamin E and ferulic acid to defend against environmental stressors. Christa Joanna Lee, Allure, 19 June 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

Browse Nearby Words

Cite this Entry

“Stressor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stressor. Accessed 26 Jun. 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
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