Etymology
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isometric (adj.)
1838, literally "of the same measure," from iso- "the same, equal" + -metric. The components are Greek: isos "equal, identical" + metron "a measure." Originally a method of using perspective in drawing; later in reference to crystals. The physiological sense relating to muscular action is from 1889, from German isometrisch in this sense (1882).
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isometrics (n.)
as a type of exercise, 1962, American English, from isometric; also see -ics.
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anisometric (adj.)
"of unequal measurement," 1850, perhaps based on German anisometrisch (by 1836); see an- (1) "not" + isometric.
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isometry (n.)
in mathematics, 1941, probably from isometric (q.v.) on the model of geometry/geometric.
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