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Definition of Paranasal sinus
1. Noun. Any of the paired sinuses in the bones of the face adjacent to the nasal cavity that are lined with mucous membrane that is continuous with the lining of the nasal cavities.
Definition of Paranasal sinus
1. Noun. (anatomy) A number of air-filled spaces, or sinuses, within the bones of the skull and face. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Paranasal Sinus
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