'Longitudinal' definitions:

Definition of 'longitudinal'

From: WordNet
adjective
Of or relating to lines of longitude; "longitudinal reckoning by the navigator"
adjective
Running lengthwise; "a thin longitudinal strip"; "longitudinal measurements of the hull"
adjective
Over an extended time; "a longitudinal study of twins"

Definition of 'Longitudinal'

From: GCIDE
  • Longitudinal \Lon`gi*tu"di*nal\, a. [Cf. F. longitudinal.]
  • 1. Of or pertaining to longitude or length; as, longitudinal distance. [1913 Webster]
  • 2. Extending in length; in the direction of the length; running lengthwise, as distinguished from transverse; as, the longitudinal diameter of a body. --Cheyne. [1913 Webster]

Definition of 'Longitudinal'

From: GCIDE
  • Longitudinal \Lon`gi*tu"di*nal\, n. A railway sleeper lying parallel with the rail. [1913 Webster]