The term “cycloid” refers to a specific type of curve traced by a point on the circumference of a circular wheel as the wheel rolls along a straight path without slipping. Mathematically, it can be described as the path traced out by a fixed point on the circumference of a circle as it moves along a straight line. Cycloids exhibit unique properties in physics and are often studied in the context of mechanics and engineering, particularly in the analysis of rolling motion. The term can also describe shapes or patterns that resemble this curve.