isometry

American  

[ahy-som-i-tree] / aɪˈsɒm ɪ tri /

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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isometry British  

/ aɪˈsɒmɪtrɪ /

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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isometry Scientific  

/ 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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Etymology

Origin of isometry

From the Greek word isometría, dating back to 1940–45. See iso-, -metry