trochoid
English
![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/CycloidAnim04.gif/220px-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
Adjective
trochoid (comparative more trochoid, superlative most trochoid)