A membrane in the ear, also known as the eardrum, that vibrates in response to sound waves. The doctor examined the patient's tympanum to check for signs of infection.
An architectural element, typically a semi-circular or triangular decorative wall surface over an entrance, bounded by a lintel and an arch. The tympanum above the cathedral's main door was intricately carved with scenes from the Bible.
In zoology, a thin membrane or specialized organ in certain insects, amphibians, and reptiles that functions as an auditory organ. The grasshopper's tympanum vibrates in response to the chirps of its companions.