'Longitudinally' definitions:

Definition of 'longitudinally'

From: WordNet
adverb
Across time; "We studied the development of the children longitudinally"
adverb
In the direction of the length; "He cut the paper lengthwise" [syn: lengthways, lengthwise, longwise, longways, longitudinally]
adverb
With respect to longitude; "longitudinally measured"

Definition of 'Longitudinally'

From: GCIDE
  • Longitudinally \Lon`gi*tu"di*nal*ly\, adv. In the direction of length. [1913 Webster]