音标：['i:vәlu:t] ；

n. 渐屈线
a. 展开的, 反卷的

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.

evolute的用法和样例：

例句

用作名词(n.)

Construct the cardioid and its evolute.建构心脏线及其渐屈线。

词汇搭配

evolute of a surface渐屈面
filar evolute线渐屈线

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