paranasal sinus

(redirected from Cranial Sinus)
Also found in: Dictionary, Medical, Encyclopedia, Wikipedia.
Related to Cranial Sinus: sinuses of dura mater
  • noun

Synonyms for paranasal sinus

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