[lon-ji-tood-n-l, -tyood-] /ˌlɒn dʒɪˈtud n l, -ˈtyud-/
of or relating to or length:
extending in the direction of the length of a thing; running lengthwise:
a thin, longitudinal stripe.
Zoology. pertaining to or extending along the long axis of the body, or the direction from front to back, or head to tail.
pertaining to a research design or survey in which the same subjects are observed repeatedly over a period of time.
a member, as in the hull of a ship.
of or relating to longitude or length
placed or extended lengthways Compare transverse (sense 1)
(psychol) (of a study of behaviour) carried on over a protracted period of time
1706, from Latin longitudo (see longitude) + -al (1).
longitudinal lon·gi·tu·di·nal (lŏn’jĭ-tōōd’n-əl, -tyōōd’-)
Running in the direction of the long axis of the body or any of its parts.
- Longitudinal aberration
longitudinal aberration n. The distance separating the focus of paraxial and peripheral rays on the optic axis in spherical aberration.
noun, Naval Architecture. 1. the ratio of the immersed volume of a hull to the product obtained by multiplying its length on the water line by the immersed area of the midship transverse section, all assuming a given depth of immersion of the hull.
- Longitudinal dune
longitudinal dune (lŏn’jĭ-td’n-əl) A large, elongated dune lying parallel to the prevailing wind direction. Longitudinal dunes usually have symmetrical cross sections. They generally form in areas that are located behind an obstacle where sand is abundant and the wind is constant and strong. They are usually tens of meters high and up to 100 km […]
- Longitudinal fissure of cerebrum
longitudinal fissure of cerebrum n. A deep cleft separating the two hemispheres of the cerebrum, but bridged by the corpus callosum and the hippocampal commissure.