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sinus noun

  /ˈsaɪ.nəs/
  • (anatomy, zootomy) A pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities (the paranasal sinus).
па́зуха, свищ, фи́стула
  • (pathology) An abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface.
свищ, фи́стула
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