epicycloidPronunciation: /ˌɛpɪˈsʌɪklɔɪd/Definition of epicycloid noun Mathematics a curve traced by a point on the circumference of a circle rolling on the exterior of another circle. Derivatives epicycloidalPronunciation: /-ˈklɔɪd(ə)l/ adjective epicycloid in other Oxford dictionaries Definition of epicycloid in the US English dictionary
