Definitions for "Cycloid"
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.
a line generated by a point on a circle rolling along a straight line
resembling a circle
said of the scales of typical soft-rayed fishes having smooth posterior margins (smooth to the touch)
Smooth, with circular or concentric lines of growth (refers to fish scales).
(of fish scales) smooth and rounded
a term developed by Ernst Kretschmer to describe a particular relationship between body build and personality type. The cycloid personality, which was associated with a heavy-set, soft type of body, was said to vacillate between normality and abnormality.
Keywords:  pertaining
Of or pertaining to the Cycloidei.
Keywords:  one
One of the Cycloidei.