chronological age
noun
: the age of a person as measured from birth to a given date
His chronological age is five, but his mental age is three—he thinks and behaves like a three-year-old.
Examples of chronological age in a Sentence
Recent Examples on the Web
Advertisement Differences between biological age and chronological age speaks to the possibility that aging is malleable.
—
Dominique Mosbergen, Time, 25 Sep. 2025
Across blood, saliva and urine, her biological age was significantly younger than her chronological age on multiple independent clocks.
—New Atlas, 24 Sep. 2025
The results showed that the more extreme heat events people experienced, the faster their biological age accelerated relative to their chronological age.
—Javier Carbajal, Wired News, 30 Aug. 2025
Biological age is different from chronological age.
—Scott Lafee, San Diego Union-Tribune, 19 Aug. 2025
Being able to see heart age and chronological age side by side makes heart health easier to understand, Nour Makarem, PhD, cardiovascular epidemiologist and assistant professor at the Columbia University Mailman School of Public Health, told Health.
—Kristen Fischer, Health, 9 Aug. 2025
This is especially true if your heart’s biological age is at least a decade higher than your chronological age, Shapiro says.
—Tom Gavin, EverydayHealth.com, 6 Aug. 2025
Men had an average heart age of 56.7, seven years higher than their chronological age of 49.7.
More than 22% of women and 33% of men with a high-school education or less had a heart age that exceeded their chronological age by more than 10 years.
—Melissa Rudy, FOXNews.com, 31 July 2025
The research, published in the journal Menopause, found that both chronological age and reproductive age play a key role in reducing various forms of anger in women between the ages of 35 and 55.
—Daniella Gray, MSNBC Newsweek, 2 July 2025
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Dominique Mosbergen, Time, 25 Sep. 2025
Across blood, saliva and urine, her biological age was significantly younger than her chronological age on multiple independent clocks.
—New Atlas, 24 Sep. 2025
The results showed that the more extreme heat events people experienced, the faster their biological age accelerated relative to their chronological age.
—Javier Carbajal, Wired News, 30 Aug. 2025
Biological age is different from chronological age.
—Scott Lafee, San Diego Union-Tribune, 19 Aug. 2025
Being able to see heart age and chronological age side by side makes heart health easier to understand, Nour Makarem, PhD, cardiovascular epidemiologist and assistant professor at the Columbia University Mailman School of Public Health, told Health.
—Kristen Fischer, Health, 9 Aug. 2025
This is especially true if your heart’s biological age is at least a decade higher than your chronological age, Shapiro says.
—Tom Gavin, EverydayHealth.com, 6 Aug. 2025
Men had an average heart age of 56.7, seven years higher than their chronological age of 49.7.
More than 22% of women and 33% of men with a high-school education or less had a heart age that exceeded their chronological age by more than 10 years.
—Melissa Rudy, FOXNews.com, 31 July 2025
The research, published in the journal Menopause, found that both chronological age and reproductive age play a key role in reducing various forms of anger in women between the ages of 35 and 55.
—Daniella Gray, MSNBC Newsweek, 2 July 2025
Cite this Entry
“Chronological age.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chronological%20age. Accessed 3 Oct. 2025.
Copy CitationMedical Definition
chronological age
noun
chro·no·log·i·cal age
ˌkrän-ᵊl-ˌäj-i-kəl-, ˌkrōn- 
: the age of a person as measured from birth to a given date compare achievement age
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