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stressor

[stres-er, -awr]
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noun
  1. an activity, event, or other stimulus that causes stress.

Origin of stressor

First recorded in 1950–55; stress + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for stressors

stressor

noun
  1. an event, experience, etc, that causes stress
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for stressors

stressor

n.

1950, agent noun in Latin form from stress (v.).

Online Etymology Dictionary, © 2010 Douglas Harper