Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of evolvent is as below...

Involute :: Involute (n.) A curve traced by the end of a string wound upon another curve, or unwound from it; -- called also evolvent. See Evolute..

Evolute :: Evolute (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..

Evolvent :: Evolvent (n.) The involute of a curve. See Involute, and Evolute..

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