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
Two people of the same chronological age could have different biological ages.
—
Maggie O'Neill, Verywell Health, 12 Feb. 2025
Biological age measures how old your cells and tissues are, and reveals how slowly or quickly your aging compared to your chronological age.
—Hannah Singleton, Health, 24 Dec. 2024
On the flip side, if someone’s biological age is younger than their chronological age, that’s a sign of better health and a potentially longer life expectancy.
—Hannah Singleton, Health, 24 Dec. 2024
People grow at different rates; markers of maturity will never track perfectly with chronological age and can vary according to ethnicity and socioeconomic factors.
—Will Coldwell, The Dial, 3 Dec. 2024
Faster biological aging—being older than your chronological age—increases the risk of problems like prediabetes, Type 2 diabetes, heart disease, cancer, and hormonal imbalances.
—Angela Haupt, TIME, 4 Dec. 2024
And, unlike chronological age, it can be sped up, slowed down, and even reversed.
—Thomas G. Moukawsher, Newsweek, 7 Nov. 2024
Graeff’s journey began with a startling revelation: despite her active lifestyle, her biological age was accelerating faster than her chronological age.
—Serenity Gibbons, Forbes, 31 Oct. 2024
In this scenario, the discrepancy between chronological age and biological age was 0.25 years smaller for HRT users than for women who never received this therapy.
—Lisa Rapaport, EverydayHealth.com, 5 Sep. 2024
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Maggie O'Neill, Verywell Health, 12 Feb. 2025
Biological age measures how old your cells and tissues are, and reveals how slowly or quickly your aging compared to your chronological age.
—Hannah Singleton, Health, 24 Dec. 2024
On the flip side, if someone’s biological age is younger than their chronological age, that’s a sign of better health and a potentially longer life expectancy.
—Hannah Singleton, Health, 24 Dec. 2024
People grow at different rates; markers of maturity will never track perfectly with chronological age and can vary according to ethnicity and socioeconomic factors.
—Will Coldwell, The Dial, 3 Dec. 2024
Faster biological aging—being older than your chronological age—increases the risk of problems like prediabetes, Type 2 diabetes, heart disease, cancer, and hormonal imbalances.
—Angela Haupt, TIME, 4 Dec. 2024
And, unlike chronological age, it can be sped up, slowed down, and even reversed.
—Thomas G. Moukawsher, Newsweek, 7 Nov. 2024
Graeff’s journey began with a startling revelation: despite her active lifestyle, her biological age was accelerating faster than her chronological age.
—Serenity Gibbons, Forbes, 31 Oct. 2024
In this scenario, the discrepancy between chronological age and biological age was 0.25 years smaller for HRT users than for women who never received this therapy.
—Lisa Rapaport, EverydayHealth.com, 5 Sep. 2024
Cite this Entry
“Chronological age.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chronological%20age. Accessed 4 Mar. 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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