Synonyms and Antonyms for paranasal-sinus

1. paranasal sinus (n.)

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


2. sinus (n.)

an abnormal passage leading from a suppurating cavity to the body surface


4. sinus (n.)

any of various air-filled cavities especially in the bones of the skull