Definitions

longitudinal

[lon-ji-tood-n-l, -tyood-] / ˌlɒn dʒɪˈtud n l, -ˈtyud- /

ADJECTIVE

over a protracted period of time; running lengthwise

Synonyms

STRONGEST

lengthwise long long-term

STRONG

continuing endlong long-run protensive

WEAK

continued drawn-out elongated extensive linear longstanding overall prolonged protracted

Antonyms

STRONGEST

immediate short-term

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.

Their ongoing longitudinal study includes more than 160 centenarians, among them 20 validated supercentenarians, drawn from diverse regions of Brazil with wide-ranging social, cultural, and environmental backgrounds.

From Science Daily

To study these patterns over time, the researchers analyzed longitudinal data from the national Health and Retirement Study.

From Science Daily

Then, I used the longitudinal feature of the CPS to follow up with those same individuals when they were interviewed one year later.

From MarketWatch

A longitudinal study involves repeatedly collecting data from the same group over an extended period, tracking changes and trends over a period of time.

From Science Daily

Lewis, the Measure of America director, pointed to a longitudinal study of young people in similar situations.

From Los Angeles Times