1. A figure described by a point in the circumference of a circle as it rolls along a straight line till it has completed a revolutions.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• xycloid,
• vycloid,
• fycloid,
• dycloid,
• ctcloid,
• cgcloid,
• chcloid,
• cucloid,
• c7cloid,
• c6cloid,
• cyxloid,
• cycloide,
• cyloid,
• cicloid,
• cycloidie,
• Sicloid,
• Cyloide,
• Cycloides,
• Cycloiden,
• Cycloiede

• cycle,
• cloud,
• clod,
• cycloidal,
• cyclone,
• cyclotron,
• scold,
• cyclades.

The adjective form of the word "cycloid" is "cycloidal".

The plural of the "cycloid" can be the "cycloids".

The singular of the "cycloid" can be the "cycloid".