Definitions for "Cycloidal"
Pertaining to, or resembling, a cycloid; as, the cycloidal space is the space contained between a cycloid and its base.
The path that a point on a circle takes as it rotates around the inside of a larger circle. A cycloidal drive replaces conventional gears with an eccentric internal cam which takes a cycloidal path inside a fixed housing; the result is a reduction in speed.
resembling a circle