(n.) A pit, groove, cavity or depression, of greater or less depth; as, the temporal fossa on the side of the skull; the nasal fossae containing the nostrils in most birds.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). fossa. Retrieved September 20, 2026, from http://smartdefine.org/fossa/definitions/2009793 |
| Chicago | Webster's. 2011. "fossa" http://smartdefine.org/fossa/definitions/2009793 (accessed September 20, 2026). |
| Harvard | Webster's 2011, fossa, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/fossa/definitions/2009793>. |
| MLA | Webster's. "fossa" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/fossa/definitions/2009793> |