(n.) A small opening; especially, one of the apertures, closed by membranes, between the tympanum and internal ear.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). fenestra. Retrieved September 22, 2026, from http://smartdefine.org/fenestra/definitions/2007489 |
| Chicago | Webster's. 2011. "fenestra" http://smartdefine.org/fenestra/definitions/2007489 (accessed September 22, 2026). |
| Harvard | Webster's 2011, fenestra, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/fenestra/definitions/2007489>. |
| MLA | Webster's. "fenestra" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/fenestra/definitions/2007489> |