risk factor

noun

: something that increases risk or susceptibility

Examples of risk factor in a Sentence

Age is one of the risk factors for this disease.
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.
Body Weight Being overweight or obese is another major risk factor—both for developing asthma and for the condition getting worse—but Gordon said the interplay is complex. Helen Carefoot, Flow Space, 13 Feb. 2026 For this deicing mixture, salt is the primary risk factor. Timothy Dale, Better Homes & Gardens, 10 Feb. 2026 Vision loss is a risk factor for dementia. Akshay Syal, NBC news, 9 Feb. 2026 Climate change itself has become a major risk factor, with heatwaves disabling power plants and droughts drying up hydro reservoirs. Scott Montgomery, Forbes.com, 30 Jan. 2026 See All Example Sentences for risk factor

Word History

First Known Use

1907, in the meaning defined above

Time Traveler
The first known use of risk factor was in 1907

Browse Nearby Words

Cite this Entry

“Risk factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/risk%20factor. Accessed 15 Feb. 2026.

Kids Definition

risk factor

noun
: something that increases the possibility that something bad will happen
cigarette smoking is a risk factor for lung cancer

Medical Definition

risk factor

noun
: something that increases risk or susceptibility
poorly controlled hypertension is a risk factor for coronary heart disease

More from Merriam-Webster on risk factor

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