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3 definitions found
 for longitudinal
From The Collaborative International Dictionary of English v.0.48 :

  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]

From The Collaborative International Dictionary of English v.0.48 :

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

From WordNet (r) 3.0 (2006) :

  longitudinal
      adj 1: of or relating to lines of longitude; "longitudinal
             reckoning by the navigator"
      2: running lengthwise; "a thin longitudinal strip";
         "longitudinal measurements of the hull"
      3: over an extended time; "a longitudinal study of twins"

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