paranasal sinus

English - English

Definition of paranasal sinus in English English dictionary

A number of air-filled spaces, or sinuses, within the bones of the skull and face

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 lining of the nasal cavities

Hyphenation

par·a·na·sal si·nus

Synonyms

sinus paranasales