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evolute
[ ev-uh-lootor, especially British, ee-vuh- ]
noun
, Geometry.
- the locus of the centers of curvature of, or the envelope of the normals to, another curve. Compare involute ( def 5 ).
evolute
/ ˈɛvəˌluːt /
noun
- a geometric curve that describes the locus of the centres of curvature of another curve (the involute ). The tangents to the evolute are at right angles to the involute
adjective
- biology having the margins rolled outwards
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Word History and Origins
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Word History and Origins
Origin of evolute1
C19: from Latin ēvolūtus unrolled, from ēvolvere to roll out, evolve
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Example Sentences
The adjective translated evolute (udanh) is of frequent occurrence in the formulas, but has no exact equivalent in English.
From Project Gutenberg
The evolute of a curve is the curve which is the envelope of all its normals or the locus of all its centres of curvature.
From Project Gutenberg
These names are given to the curves because the end of a stretched thread unwound from the evolute will describe the involute.
From Project Gutenberg
The locus of the centres of curvature, or envelope of the normals, of a curve is called the “evolute.”
From Project Gutenberg
The involutes are “orthogonal trajectories” of the tangents to the common evolute.
From Project Gutenberg
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