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longitudinal

[lon-ji-tood-n-l, -tyood-] / ˌlɒn dʒɪˈtud n l, -ˈtyud- /
ADJECTIVE
over a protracted period of time; running lengthwise
Synonyms
Antonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Researchers followed more than 5,000 adults in China who were age 80 or older and enrolled in the Chinese Longitudinal Healthy Longevity Survey, a nationally representative project that began in 1998.

From Science Daily • Feb. 26, 2026

Longitudinal studies usually consist of a “brief self-report at one point in time, and early mortality” at some later point.

From Science Magazine • Apr. 24, 2024

Dr Nils Niederstrasser and colleagues used data on 1,156 individuals aged 50+ living in England who took part in the English Longitudinal Study of Ageing.

From Science Daily • Mar. 20, 2024

For the majority of multiple jobholders, their side gigs made up about 25% of their total income, according to the Census Bureau analysis of Longitudinal Employer-Household Dynamics data.

From Los Angeles Times • Mar. 4, 2024

Department of Education undertook a monumental project called the Early Childhood Longitudinal Study.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt



Vocabulary lists containing longitudinal