Liberal Dictionary English Dictionary
evolute [ev-uh-loot or, esp. British, ee-vuh-] ExamplesWord Origin noun Geometry.
- the locus of the centers of curvature of, or the envelope of the normals to, another curve.Compare involute(def 5).
Origin of evolute 1720–30; Latin ēvolūtus (past participle of ēvolvere to roll out, unfold, evolve) Examples from the Web for evolute Historical Examples of evolute
By and by that flour-sack is going to evolute into an underskirt for me to wear under my dress when I go to school.
Opal Whiteley
This point evidently lies upon the branch zM of the evolute in Fig. 23.
Scientific American Supplement, No. 595, May 28, 1887
Various
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.
Various
These names are given to the curves because the end of a stretched thread unwound from the evolute will describe the involute.
Various
A curve which has a given curve as evolute is called an “involute” of the given curve.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 5
Various
British Dictionary definitions for evolute evolute 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
Word Origin for evolute C19: from Latin ēvolūtus unrolled, from ēvolvere to roll out, evolve