Petrositis
petrositis pet·ro·si·tis (pět’rə-sī’tĭs)
n.
Inflammation of the petrous portion of the temporal bone and its air cells.
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petrotympanic fissure pet·ro·tym·pan·ic fissure (pět’rō-tĭm-pān’ĭk) n. A fissure between the tympanic and petrous portions of the temporal bone. Also called glaserian fissure.
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