Definify.com
Webster 1913 Edition
Epicycloid
Epˊi-cy′cloid
,Noun.
[
Epicycle
+ -oid
: cf. F. épicycloïde
.] (Geom.)
A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle.
☞ Any point rigidly connected with the rolling circle, but not in its circumference, traces a curve called an epitrochoid. The curve traced by a point in the circumference of the rolling circle when it rolls on the concave side of a fixed circle is called a hypocycloid; the curve traced by a point rigidly connected with the rolling circle in this case, but not its circumference, is called a hypotrochoid. All the curves mentioned above belong to the class class called
roulettes
or trochoids
. See Trochoid
. Webster 1828 Edition
Epicycloid
EPICYC'LOID
,Noun.
A curve generated by any point in the plane of a movable circle which rolls on the inside or outside of the circumference of a fixed circle.
Definition 2024
epicycloid
epicycloid
English
Noun
epicycloid (plural epicycloids)
- (geometry) The locus of a point on the circumference of a circle that rolls without slipping on the circumference of another circle.
Translations
locus
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