Definition of epicycloid in English:


Line breaks: epi|cyc¦loid
Pronunciation: /ˌɛpɪˈsʌɪklɔɪd


A curve traced by a point on the circumference of a circle rolling on the exterior of another circle.
More example sentences
  • He also investigated caustic curves and in particular he studied these associated curves of the parabola, the logarithmic spiral and epicycloids around 1692.
  • The nephroid is the epicycloid formed by a circle of radius a rolling externally on a fixed circle of radius 2a.
  • These are the epicycloid, the epitrochoid, the hypocycloid and the hypotrochoid and they are traced by a point P on a circle of radius b which rolls round a fixed circle of radius a.



Pronunciation: /-ˈklɔɪd(ə)l/

Definition of epicycloid in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day demoralize
Pronunciation: dəˈmôrəˌlīz
cause (someone) to lose confidence or hope; dispirit