### Definitions Found:

# A curve traced by a point on the circumference of a circle rolling on the exterior of another circle

- epicycloidsA curve traced by a point on the circumference of a circle rolling on the exterior of another circle
- epicycloidA curve traced by a point on the circumference of a circle rolling on the exterior of another circle
- hypocycloidsThe curve traced by a point on the circumference of a circle that is rolling on the interior of another circle
- hypocycloidThe curve traced by a point on the circumference of a circle that is rolling on the interior of another circle
- hypocycloida curve generated by a point on the circumference of a circle which rolls on the inside of another circle
- hypocycloidsHYPOCYCLOID, a curve generated by a point on the circumference of a circle which rolls on the inside of another circle
- hypotrochoidthe curve traced by a point on the radius, or radius produced, of a circle rolling within another circle
- hypotrochoidsHYPOTROCHOID, the curve traced by a point on the radius, or radius produced, of a circle rolling within another circle
- cardioidsA heart-shaped curve traced by a point on the circumference of a circle as it rolls around another identical circle
- epicycloida curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle
- epicycloidsEPICYCLOID, a curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle
- trochoidthe curve generated by a point on the radius of a circle or the radius extended as the circle rolls on a fixed straight line
- cycloidalof or like a cycloid, a curve traced by a point on the circumference of a circle which rolls along a straight line
- cycloidallyCYCLOIDAL, of or like a cycloid, a curve traced by a point on the circumference of a circle which rolls along a straight line