Definition of Longitudinal
Longitudinal: The word come from the Latin longitudo meaning length. Hence, longitudinal means along the length, running lengthwise, or (by extension) over the course of time.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=4195
Last Editorial Review: 3/26/1998 2:27:00 PM
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