paranasal sinus
[ păr′ə-nā′zəl ]
n.
Any of the paired cavities, designated frontal, sphenoidal, maxillary, and ethmoidal, located in the bones of the face and lined by a mucous membrane continuous with that of the nasal cavity.
Words nearby paranasal sinus
play-centre,
play-doh,
play-lunch,
play-off,
play-the-ball,
paranasal sinus,
playability,
playable,
playact,
playback,
playback head