A “cycloid” is a type of curve traced by a point on the circumference of a circular wheel as the wheel rolls along a straight line. Specifically, if the wheel rolls without slipping, the path traced by that point forms a series of arches, known as cycloids. The cycloid is characterized by its distinctive shape, which consists of an arc that rises and then falls back to the line over each revolution of the wheel. In mathematics, it is often studied in the context of calculus and geometric properties.