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.
Air pollution has previously been established as a risk factor for Alzheimer’s, as well as other chronic conditions, like hypertension, stroke and depression, the researchers noted. Angelica Stabile, FOXNews.com, 20 Feb. 2026 In addition, there is evidence that magnesium deficiency may be a risk factor for osteoporosis (low bone density). Md Published, Verywell Health, 19 Feb. 2026 The duration may be longer depending on whether the clot was provoked by a temporary risk factor or reflects an ongoing predisposition. Katia Hetter, CNN Money, 18 Feb. 2026 The main risk factor is family history. Nicole Villalpando, Austin American Statesman, 18 Feb. 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 26 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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