geographical variation

From The Collaborative International Dictionary of English v.0.48:

Geographic \Ge`o*graph"ic\, Geographical \Ge`o*graph"ic*al\, a.
   [L. geographicus, Gr. ?: cf. F. g['e]ographique.]
   Of or pertaining to geography.
   [1913 Webster]

   Geographical distribution. See under Distribution.

   Geographic latitude (of a place), the angle included
      between a line perpendicular or normal to the level
      surface of water at rest at the place, and the plane of
      the equator; differing slightly from the geocentric
      latitude by reason of the difference between the earth's
      figure and a true sphere.

   Geographical mile. See under Mile.

   Geographical variation, any variation of a species which is
      dependent on climate or other geographical conditions.
      [1913 Webster]
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