trochoid
English
![](../I/m/CycloidAnim04.gif)
Etymology
From Ancient Greek τροχοειδής (trokhoeidḗs), from τροχός (trokhós, “wheel”) + εἶδος (eîdos, “form, image”)
Noun
trochoid (plural trochoids)
- (mathematics) The curve traced by a point on a circle as it rolls along a straight line
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