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.
As with so many diseases, the single greatest risk factor for Parkinson’s is aging. Adam Cohen, Oklahoman, 24 Mar. 2026 Previous research has shown that parent obesity is a risk factor for childhood obesity, and that parent stress may be an additional hidden driver of early childhood obesity. Karen Guzman, Hartford Courant, 21 Mar. 2026 The genetic risk factor Those major risk indicators are what ushered me into my own cancer prevention safari. Zachary Bernstein, Los Angeles Times, 17 Mar. 2026 Age is the most common risk factor. Erica Sweeney, SELF, 16 Mar. 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 1 Apr. 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

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