- (a.) Admitting of rotation on an axis; -- sometimes applied to a pivot joint like that between the atlas and axis in the vertebral column.
- (a.) Of or pertaining to the genus Trochus or family Trochidae.
- (a.) Top-shaped; having a flat base and conical spire; -- said of certain shells.
- (n.) The curve described by any point in a wheel rolling on a line; a cycloid; a roulette; in general, the curve described by any point fixedly connected with a moving curve while the moving curve rolls without slipping on a second fixed curve, the curves all being in one plane. Cycloids, epicycloids, hypocycloids, cardioids, etc., are all trochoids.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). trochoid. Retrieved September 21, 2026, from http://smartdefine.org/trochoid/definitions/2075000 |
| Chicago | Webster's. 2011. "trochoid" http://smartdefine.org/trochoid/definitions/2075000 (accessed September 21, 2026). |
| Harvard | Webster's 2011, trochoid, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/trochoid/definitions/2075000>. |
| MLA | Webster's. "trochoid" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/trochoid/definitions/2075000> |