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.
Cigarette smoking is a risk factor for lung cancer, heart disease and stroke, and it’s long been considered the leading cause of preventable death. Mike Stobbe, Fortune, 29 May 2026 In China, for instance, some experts think that at least part of the explanation is the implementation of the two-child policy, which bumped up the average maternal age at birth—a key risk factor for gestational diabetes. Katherine J. Wu, The Atlantic, 27 May 2026 Making the film after the decline in interest in the third season was always going to be a gamble but that wasn’t the only risk factor. Caroline Reid, Forbes.com, 24 May 2026 Most sepsis cases happen in people with at least one risk factor – older adults, infants, people with chronic conditions like diabetes or cancer, weak immune systems, or anyone recently hospitalized or recovering from surgery. Dr. Jamin Brahmbhatt, CNN Money, 24 May 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 2 Jun. 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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