a. [ See Tympanum. ] 1. Like a tympanum or drum; acting like a drumhead; as, a tympanic membrane. [ 1913 Webster ]
2. (Anat.) Of or pertaining to the tympanum. [ 1913 Webster ]
Tympanic bone (Anat.), a bone of the skull which incloses a part of the tympanum and supports the tympanic membrane. -- Tympanic membrane. (Anat.) See the Note under Ear. [ 1913 Webster ]