The Framingham study is widely recognised as the quintessential longitudinal study in the history of medical research. An original cohort of 5,209 subjects from Framingham, Massachusetts between …

A longitudinal line or structure goes from one end of an object to the other rather than across it from side to side. That stability lends itself to longitudinal analysis. Collins COBUILD Advanced Learner’s …

LONGITUDINAL definition: of or relating to longitude or length. See examples of longitudinal used in a sentence.

1. of or pertaining to longitude or length: longitudinal measurement. 2. extending in the direction of the length of a thing; lengthwise. 3. of or extending along the long axis of the body, or the direction from …

Feb 11, 2026 · Adjective longitudinal (not comparable) Running across a set direction of an object.

medical, social sciences Longitudinal research is done on people or groups over a long period of time: longitudinal analysis / studies (Definition of longitudinal from the Cambridge Advanced Learner's …

Definition of longitudinal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Use the adjective longitudinal to describe something that takes place over a long period of time, like a study of the lifetime eating habits of people who live on islands. Sociologists and other scientists use …

longitudinal, adj. & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Longitudinal refers to a type of study, data collection, or analysis that occurs over a prolonged period of time, where data is collected at multiple time points from the same subjects or items.