As adjectives the difference between longitudinal and widthwise
is that longitudinal is relating to length, or to longitude while widthwise is directed across the width of an object or place.
As a noun longitudinal
is any longitudinal piece, as in shipbuilding etc.
As an adverb widthwise is
across the width of an object or place.
longitudinal
English
Adjective
(
wikipedia longitudinal)
(
-)
Relating to length, or to longitude.
Running in the direction of the long axis of a body.
Forward and/or backward, relative to some defined direction.
(science, and, social science, of a study) Sampling data over time rather than merely once.
Antonyms
* (relating to length) transverse
* (sampling data over time) cross-sectional
Noun
(
en noun)
Any longitudinal piece, as in shipbuilding etc.
# A railway sleeper lying parallel with the rail.
----
widthwise
English
Adjective
(
en adjective)
directed across the width of an object or place.
- Make a widthwise cut.
Adverb
(
en adverb)
Across the width of an object or place.
- The tubes should be placed widthwise inside the box.