- (n.) A drum-shaped wheel with spirally curved partitions by which water is raised to the axis when the wheel revolves with the lower part of the circumference submerged, -- used for raising water, as for irrigation.
- (n.) One of the naked, inflatable air sacs on the neck of the prairie chicken and other species of grouse.
- (n.) The ear drum or middle ear. Sometimes applied incorrectly to the tympanic membrane. See Ear.
- (n.) A chamber in the anterior part of the syrinx of birds.
- (n.) The space within an arch, and above a lintel or a subordinate arch, spanning the opening below the arch.
- (n.) The recessed face of a pediment within the frame made by the upper and lower cornices, being usually a triangular space or table.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). tympanum. Retrieved September 26, 2026, from http://smartdefine.org/tympanum/definitions/2075907 |
| Chicago | Webster's. 2011. "tympanum" http://smartdefine.org/tympanum/definitions/2075907 (accessed September 26, 2026). |
| Harvard | Webster's 2011, tympanum, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/tympanum/definitions/2075907>. |
| MLA | Webster's. "tympanum" 28 May 2011. Web. 26 September 2026. <http://smartdefine.org/tympanum/definitions/2075907> |