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Definition: a small and often only faintly marked depression on the inferior surface of the petrous portion of the temporal bone, between the jugular fossa and the opening of the carotid canal; here opens the canaliculus tympanicus transmitting the tympanic nerve.
Synonym(s): fossula petrosaTA, petrosal fossa, receptaculum ganglii petrosi
Examples: glitazone, GI cocktail, etc.
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