The meaning of LONGITUDINAL is placed or running lengthwise. How to use longitudinal in a sentence.

A longitudinal study (or longitudinal survey, or panel study) is a research design that involves repeated observations of the same variables (e.g., people) over long periods of time (i.e., uses longitudinal data).

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

The front-to-back arches (called the longitudinal arches) are natural curves along the bottoms of both feet that are supported by muscles and ligaments.

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 …

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

Dec 30, 2025 · Adjective longitudinal (not comparable) Running across a set direction of an object.

Nov 18, 2025 · Longitudinal describes anything that runs parallel to this primary axis, following the direction of the greatest dimension or the main line of movement. A measurement of length is …

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 …

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 …