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Medical Definition of Apertura sinus frontalis
1. One of a pair of openings in the floor of the frontal sinuses in the nasal part of the frontal bone, through which the frontal sinuses communicate with the ethmoidal infundibulum via the frontonasal duct. Synonym: apertura sinus frontalis. (05 Mar 2000)
Lexicographical Neighbors of Apertura Sinus Frontalis
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