| 单词 | hypocycloid | 
| 释义 | Word Frequency hypocycloid(ˌhaɪpəˈsaɪklɔɪd) noun a curve described by a point on the circumference of a circle as the circle rolls around the inside of a fixed coplanar circleCompare epicycloid,  cycloid (sense 4) Derived formshypocycloidal (ˌhypocyˈcloidal) adjective | 
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