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frontal sinus
Noun
Meaning
one of a pair of cavities in the frontal bone
Source: WordNet
Synonyms
nasopharynx
mastoid process
nasal cavity
maxillary sinus
paranasal sinus
Hypernyms
sinus
Close letter words and terms
frontal process
frontal region
frontal ridge
frontal suture
frontal tuber
frontal wedgie