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.
Such stressors include prolonged changes in temperature or light level. Ari Daniel, NPR, 19 May 2026 The American Psychological Association’s 2025 Stress in America report found that 69% of adults cited the spread of inaccurate or misleading information as a major source of stress, while 62% reported that societal division was a significant stressor. Maia Niguel Hoskin, Forbes.com, 15 May 2026 Rice bran oil softens and conditions skin, while vitamin E provides antioxidant protection against environmental stressors. Jailynn Taylor, Allure, 10 May 2026 On days with heavy wildfire smoke from Canada, Tummala said her patients experience the miserable effects of multiple respiratory stressors. Keerti Gopal, ArsTechnica, 8 May 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 20 May. 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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