Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Mathematics The locus of the centers of curvature of a given curve.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A curve comprising the centers of curvature of another curve.

from the GNU version of the Collaborative International Dictionary of English

  • n. A curve from which another curve, called the involute or evolvent, is described by the end of a thread gradually wound upon the former, or unwound from it. See involute. It is the locus of the centers of all the circles which are osculatory to the given curve or evolvent.

from The Century Dictionary and Cyclopedia

  • Evolved; developed: as, an evolute curve.
  • n. In mathematics, a curve which is the locus of the center of curvature of another curve, or the envelop of the normals to the latter.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

From Latin ēvolūtus, past participle of ēvolvere, to unroll; see evolve.

Examples

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