Wiktionary
paranasal
a. Of or relating to the ''paranasal sinuses'', a group of four paired air-filled spaces that surround the nasal cavity.
WordNet
paranasal
adj. adjacent to the nasal cavities; "paranasal sinus"
Wikipedia
Usage examples of "paranasal".
His eyes were hurting now, seeming to expand beyond their sockets, and the way in which his paranasal sinuses were also expanding only made it worse, as though his face would detach from the rest of his skull.
He himself had subsequently diagnosed it as malignant and arranged for its removal, but the surgeon-friend who excised it had discovered preliminary invasions of both orbits as well as of the paranasal sinuses.