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1. Oxford Dictionary

   hypocycloid

   • IPA[ˌhʌɪpə(ʊ)ˈsʌɪklɔɪd]

   英式

   • n.
     the curve traced by a point on the circumference of a circle which is rolling on the interior of another circle.

   • noun: hypocycloid, plural noun: hypocycloids

2. • 更多解釋

   hypocycloid

   • IPA[ˌhīpəˈsīkloid]

   美式

   • n.
     the curve traced by a point on the circumference of a circle which is rolling on the interior ...

   Oxford American Dictionary