Evolute



noun
1.
A.B.C evolute ការកើនឡើងនៃខ្សែបន្ទាត់ A.B.C
ENGLISH MEANING
noun
1.
It is the locus of the centers of all the circles which are osculatory to the given curve or evolvent.
2.
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.