- (n.) A form of the above apparatus, invented by M. Foucault, mounted so delicately as to render visible the rotation of the earth, through the tendency of the rotating wheel to preserve a constant plane of rotation, independently of the earth's motion.
- (n.) A rotating wheel, mounted in a ring or rings, for illustrating the dynamics of rotating bodies, the composition of rotations, etc. It was devised by Professor W. R. Johnson, in 1832, by whom it was called the rotascope.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). gyroscope. Retrieved September 22, 2026, from http://smartdefine.org/gyroscope/definitions/2014414 |
| Chicago | Webster's. 2011. "gyroscope" http://smartdefine.org/gyroscope/definitions/2014414 (accessed September 22, 2026). |
| Harvard | Webster's 2011, gyroscope, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/gyroscope/definitions/2014414>. |
| MLA | Webster's. "gyroscope" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/gyroscope/definitions/2014414> |