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 )

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

Surely, they'd never train you to evolute in squadrons.

From The Last Shot by Frederick Palmer

Matter did not create itself, nor evolute nor grow.

From The Evolution of Man Scientifically Disproved In 50 Arguments by William A. (William Asbury) Williams

The pleasing effect of the design at Seventh and Locust streets is largely due to appropriate use of the evolute spiral band.

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