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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.
About 89 percent of pet parents in New Hampshire felt travel separation anxiety was a key stressor. Liz O'Connell, MSNBC Newsweek, 26 Nov. 2025 Travel tips Flight delays and cancellations aren’t the only stressors. Sarah Hutter, CNN Money, 25 Nov. 2025 High levels of cumulative stress have also been shown to accelerate the aging process in some people and make facing new stressors feel more daunting. Emma Loewe, Outside, 24 Nov. 2025 The researchers determined that UV radiation was the single biggest stressor for the moss, and that the sporophytes handled it — and the other hardships — much better than the juvenile moss and moss stem cells did. Mike Wall, Space.com, 22 Nov. 2025 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 1 Dec. 2025.

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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