Definition: Meaning of, paranasal sinus in English to English dictionary.
Pronunciation:/ ˈsʌɪnəs /
noun
synonym
antonym
Word Forms:
Singular
Plural
paranasal sinus
paranasal sinuses
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