- (a.) Swelling by a regular curve or surface; protuberant; convex; as, the moon is gibbous between the half-moon and the full moon.
- (a.) Hunched; hump-backed.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). gibbous. Retrieved September 24, 2026, from http://smartdefine.org/gibbous/definitions/2012154 |
| Chicago | Webster's. 2011. "gibbous" http://smartdefine.org/gibbous/definitions/2012154 (accessed September 24, 2026). |
| Harvard | Webster's 2011, gibbous, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/gibbous/definitions/2012154>. |
| MLA | Webster's. "gibbous" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/gibbous/definitions/2012154> |