Adjective: longitudinal ,lón-ji't(y)oo-d(u-)nul [N. Amer], ,lón-di'tyoo-di-nul or ,lóng-ji'tyoo-di-nul [Brit]
- Running lengthwise
"a thin longitudinal strip"; "longitudinal measurements of the hull"
- Over an extended time
"a longitudinal study of twins"
- Of or relating to lines of longitude
"longitudinal reckoning by the navigator"
See also: lengthways, lengthwise, long
Encyclopedia: Longitudinal