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isometry

[ahy-som-i-tree]
noun
  1. equality of measure.
  2. Biology. equal growth rates in two parts of a developing organism.
  3. Geography. equality with respect to height above sea level.
  4. Mathematics. a function from one metric space onto a second metric space having the property that the distance between two points in the first space is equal to the distance between the image points in the second space.
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Origin of isometry

From the Greek word isometría, dating back to 1940–45. See iso-, -metry
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for isometry

isometry

noun
  1. maths rigid motion of a plane or space such that the distance between any two points before and after this motion is unaltered
  2. equality of height above sea level
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for isometry

n.

1941, from Greek isometria "equality of measure," from iso- (see iso-) + metria "a measuring" (see -metry).

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Online Etymology Dictionary, © 2010 Douglas Harper
isometry in Science

isometry

[ī-sŏm′ĭ-trē]
  1. Equality of measure.
  2. Equality of elevation above sea level.
  3. A function between two metric spaces (such as two coordinate systems) which preserves distances. A rotation or translation in a plane is an isometry, since the distances between two points on the plane remain the same after the rotation or translation.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.