ˌ ̷ ̷ ̷ ̷ˈsīˌklȯid noun
( -s )
Etymology: probably from French épicycloïde, from épicycle (from Late Latin epicyclus ) + -oïde -oid
: a curve traced by a point on a circle that rolls on the outside of a fixed circle — compare hypocycloid
[s]epicyclo.jpg[/s] [
epicycloid E, traced by point P, on circle R, rolling on fixed circle F
]