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
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In rival Anthropic’s recent S-1 filing, the inability to secure more compute is listed as a major risk factor that could cause Anthropic to be unsuccessful. — Andrew Nusca, Fortune, 4 Nov. 2026 About half of them carried the strongest genetic risk factor for it. — Helen Carefoot, Flow Space, 2 Nov. 2026 The last risk factor, according to Adshead, is the relationship between the perpetrator and her victim, and what happens between the two on the day itself. — Anja Aronowsky Cronberg, New Yorker, 24 Oct. 2026 While cigarette smoking is still the primary risk factor for lung cancer, a growing proportion of patients with the disease are nonsmokers like Lin. — Meeri Kim, Washington Post, 23 Oct. 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 11 Nov. 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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