isometry

from WordNet (r) 3.0 (2006)

isometry
    n 1: the growth rates in different parts of a growing organism
         are the same
    2: a one-to-one mapping of one metric space into another metric
       space that preserves the distances between each pair of
       points; "the isometries of the cube"
    3: equality of elevation above sea level
    4: equality of measure (e.g., equality of height above sea level
       or equality of loudness etc.)

from The Free On-line Dictionary of Computing (8 July 2008)

isometry

   <mathematics> A {mapping} of a {metric space} onto another or
   onto itself so that the distance between any two points in the
   original space is the same as the distance between their
   images in the second space.  For example, any combination of
   rotation and translation is an isometry of the plane.

   (1997-12-13)

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