• noun
• synonym
• antonym

• Phocoena sinus (noun)
  1. a short porpoise that lives in the Gulf of California; an endangered species
• cavernous sinus (noun)
  1. either of a pair of large venous sinuses in the cranial cavity
• coronary sinus (noun)
  1. a short sinus receiving most of the veins of the heart; empties into the right atrium
• ethmoid sinus (noun)
  1. behind the bridge of the nose a sinus of the meatuses of the nasal cavity
• ethmoidal sinus (noun)
  1. behind the bridge of the nose a sinus of the meatuses of the nasal cavity
• frontal sinus (noun)
  1. one of a pair of cavities in the frontal bone
• maxillary sinus (noun)
  1. one of a pair of sinuses forming a cavity in the maxilla
• nasal sinus (noun)
  1. 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
• paranasal sinus (noun)
  1. 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
• sigmoid sinus (noun)
  1. an S-shaped dural sinus on the temporal and occipital bones
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