longitudinal

[lon-ji-tood-n-l, -tyood-]
adjective
1.
of or pertaining to longitude or length: longitudinal measurement.
2.
extending in the direction of the length of a thing; running lengthwise: a thin, longitudinal stripe.
3.
Zoology. pertaining to or extending along the long axis of the body, or the direction from front to back, or head to tail.
4.
pertaining to a research design or survey in which the same subjects are observed repeatedly over a period of time.
noun
5.
a longitudinal framing member, as in the hull of a ship.

Origin:
1535–45; < Latin longitūdin- (stem of longitūdō; see longitude) + -al1

longitudinally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To longitudinal
Collins
World English Dictionary
longitudinal (ˌlɒndʒɪˈtjuːdɪnəl, ˌlɒŋɡ-)
 
adj
1.  of or relating to longitude or length
2.  Compare transverse placed or extended lengthways
3.  psychol (of a study of behaviour) carried on over a protracted period of time
 
longi'tudinally
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

longitudinal lon·gi·tu·di·nal (lŏn'jĭ-tōōd'n-əl, -tyōōd'-)
adj.
Running in the direction of the long axis of the body or any of its parts.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Example sentences
Social scientists who study relational aggression point to a dearth of
  longitudinal data.
It's the first-ever longitudinal study of the little-understood problem.
The lack of longitudinal rigidity led directly to the collapse.
We need longitudinal studies looking at infidelity over the course of people's
  married lives.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature