pyramidal eminence


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em·i·nen·ti·a py·ram·i·da·'lis

[TA]
a conical projection posterior to the vestibular window in the middle ear; it is hollow and contains the stapedius muscle.

pyramidal eminence

An elevation on the mastoid wall of the tympanic cavity. It contains a cavity through which the stapedius muscle passes.
Synonym: pyramid of the tympanum
See also: eminence