A curve generated by a point in the plane of a circle when the circle is rolled along a straight line, keeping always in the same plane.
- Resembling a circle.
- Zoology Thin, rounded, and smooth-edged; disklike. Used of fish scales.
- Zoology Having or composed of such scales.
- Psychiatry Afflicted with or relating to cyclothymia.
- Mathematics The curve traced by a point on the circumference of a circle that rolls on a straight line.
- Zoology A fish having cycloid scales.