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.
Fever during pregnancy – especially high-grade fevers – can affect the fetus’ brain development, and some studies have identified the fever itself as a risk factor for neurodevelopment disorders such as autism. Deidre McPhillips, CNN Money, 23 Sep. 2025 Based on these findings, chronic insomnia could be a potentially modifiable risk factor for cognitive impairment and dementia, according to Carvalho. Melissa Rudy, FOXNews.com, 18 Sep. 2025 However, the risk factor is undoubtedly high. Trefis Team, Forbes.com, 18 Sep. 2025 College attendance is considered its own risk factor for infection, and many states—including Florida—require the meningococcal vaccine for students living on campus. Jamie Ducharme, The Atlantic, 17 Sep. 2025 See All Example Sentences for risk factor

Word History

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of risk factor was in 1949

Browse Nearby Words

Cite this Entry

“Risk factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/risk%20factor. Accessed 30 Sep. 2025.

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

Last Updated: - Updated example sentences
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