sinus 2
noundomain: body part
Princeton WordNet [ver.3.1]
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EnglishDefinition
any of various air-filled cavities especially in the bones of the skull
Hypernym
cavity 4
noun
(anatomy) a natural hollow or sinus within the body
EnglishHyponym
ethmoid sinus 1
noun
a sinus of the meatuses of the nasal cavity (behind the bridge of the nose)
frontal sinus 1
noun
one of a pair of cavities in the frontal bone
one of a pair of sinuses forming a cavity in the maxilla
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
