#middle_ear__tympanic_cavity__tympanum  the main cavity of the ear; between the eardrum and the inner ear
  supertype:  #bodily_cavity__cavity__cavum  (anatomy) a natural hollow or sinus within the body
  part:  #ossicle  #Eustachian_tube  #malleus  #incus  #stapes
  part of:  #auditory_apparatus  all of the components of the organ of hearing including the outer and middle and inner ears
     part of:  #auditory_system  the sensory system for hearing

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