noun
- A great circle on the celestial sphere passing through the zenith and perpendicular to the horizon. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). vertical circle. Retrieved September 21, 2026, from http://smartdefine.org/vertical_circle/definitions/1224566 |
| Chicago | WordNet. 2010. "vertical circle" http://smartdefine.org/vertical_circle/definitions/1224566 (accessed September 21, 2026). |
| Harvard | WordNet 2010, vertical circle, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/vertical_circle/definitions/1224566>. |
| MLA | WordNet. "vertical circle" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/vertical_circle/definitions/1224566> |