noun Cycloid n. (Geom.) 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. Note: The common cycloid is the curve described when the generating point (p) is on the circumference of the generating circle; the curtate cycloid, when that point lies without the circumference; the prolate or inflected cycloid, when the generating point (p) lies within that circumference.
Cycloid n. (Zool.) One of the Cycloidei.
adjective Cycloid adj. (Zool.) Of or pertaining to the Cycloidei. Cycloid scale (Zool.), a fish scale which is thin and shows concentric lines of growth, without serrations on the margin.
Collaborative International Dictionary of English 0.48
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