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Noun: tympanum (tympanums,tympana)  tim-pu-num
  1. The main cavity of the ear; between the eardrum and the inner ear
    - middle ear, tympanic cavity
     
  2. The membrane in the ear that vibrates to sound
    - eardrum, tympanic membrane, myringa
     
  3. A large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it
    - kettle, kettledrum, tympani, timpani

Derived forms: tympanums, tympana

Type of: bodily cavity, cavity, cavum, membrane, percussion instrument, percussive instrument, tissue layer

Part of: auditory apparatus, ear, earhole [informal], lug [Brit, informal], lughole [Brit, informal]

Encyclopedia: Tympanum