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.
Almost half are personally afraid of losing their job to AI, ranking it among the most acute individual stressors measured in the survey. Jessica Guynn, USA Today, 28 Apr. 2026 From a biological standpoint, chronic psychiatric conditions act like a constant stressor that erodes the brain’s structural integrity. Eric J. Nestler, STAT, 28 Apr. 2026 This can happen due to your natural hair texture, dryness, or environmental stressors like wind, friction from your pillowcase, or pollution—your cuticles can catch on each other like Velcro, Small says, causing tangles. Sarah Felbin, Allure, 26 Apr. 2026 Leaves weakened by pests or disease would be susceptible to frost damage, but burgundy foliage is not affected by such stressors. Joshua Siskin, Oc Register, 25 Apr. 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 30 Apr. 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster