evolute

American  

[ev-uh-loot, ee-vuh-] / ˈɛv əˌlut, ˈi və- /

noun

Geometry.

1. the locus of the centers of curvature of, or the envelope of the normals to, another curve.

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evolute British  

/ ˈɛvəˌluːt /

noun

1. 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

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adjective

1. biology having the margins rolled outwards

Etymology

Origin of evolute

1720–30; < Latin ēvolūtus (past participle of ēvolvere to roll out, unfold, evolve )

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Example Sentences

See Examples For:

evolute

Both of these liquids have specific pericosities given by P = 2.5C.n^6-7 where n is the diathetical evolute of retrograde temperature phase disposition and C is Cholmondeley's annular grillage coefficient.

From Time Magazine Archive

Of these the first is that which is only evolvent, called the root-evolvent or the primary; it is not itself the evolute of anything else.

From The Sarva-Darsana-Samgraha Review of the Different Systems of Hindu Philosophy by Madhava Acharya

They would evolute across the parade ground a bit and then retire to quarters until the next call to arms should sound.

From Roughing it De Luxe by John T. McCutcheon

Scroll work is conspicuous, as are rosettes, but a touch of individuality is given by a Grecian band instead of the more common evolute spiral above the diaper pattern.

From The Colonial Architecture of Philadelphia by Frank Cousins

That is, the soul, being absolute, eternal, and subject to no development, is itself neither the evolvent nor the evolute of aught beside.

From The Sarva-Darsana-Samgraha Review of the Different Systems of Hindu Philosophy by Madhava Acharya

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