English dictionary
evolute
/'/E/v/@/,l/u/t/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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A curve from which another curve, called the <i>involute</i> or <i>evolvent</i>, is described by the end of a thread gradually wound upon the former, or unwound from it. See <u>Involute</u>. It is the locus of the centers of all the circles which are osculatory to the given curve or evolvent.
Source: webster1913