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Medical Definition of Tympanomastoid fissure
1. A fissure separating the tympanic portion from the mastoid portion of the temporal bone; it transmits the auricular branch of the vagus nerve. Synonym: fissura tympanomastoidea, auricular fissure, tympanomastoid suture. (05 Mar 2000)
Lexicographical Neighbors of Tympanomastoid Fissure
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