adj. Of or relating to the paranasal sinuses, a group of four paired air-filled spaces that surround the nasal cavity.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. adjacent to the nasal cavities
Word Usage
"Intensity-modulated radiation therapy (IMRT) appears to be a safe and effective treatment for cancers in the nose area, known as paranasal sinus cancers, new data suggest."