transcription, транскрипция: [ ˌe-pə-ˈsī-ˌklȯid ]
noun
Date: circa 1755
: a curve traced by a point on a circle that rolls on the outside of a fixed circle
• epi·cy·cloi·dal -sī-ˈklȯi-d ə l adjective
[
epicycloid E, traced by point P, on circle R, rolling on fixed circle F
]