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Medical Definition of Piriform fossa
1. A recess in the anterolateral wall of the nasopharynx on each side of the vestible of the larynx separated from it by the aryepiglottic folds. Synonym: recessus piriformis, piriform recess, piriform sinus. (05 Mar 2000)
Lexicographical Neighbors of Piriform Fossa
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