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In my view, the Christian religion is the most important and one of the first things in which all children, under a free government ought to be instructed... No truth is more evident to my mind than that the Christian religion must be the basis of any government intended to secure the rights and privileges of a free people. Preface to 1828 Dictionary
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CYCLOID, n. A geometrical curve on which depends the doctrine of pendulums; a figure made by the upper end of the diameter of a circle, turning about a right line. The genesis of a cycloid may be conceived by imagining a nail in the circumference of a wheel; the line which the nail describes in the air, while the wheel revolves in a right line, is the 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.
* 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. Of or pertaining to the Cycloidei.
Cycloid scale (Zoöl.), a fish scale which is thin and shows concentric lines of growth, without serrations on the margin. One of the Cycloidei.
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