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Definitions of sinus:
  • noun:   any of various air-filled cavities especially in the bones of the skull
  • noun:   a wide channel containing blood; does not have the coating of an ordinary blood vessel
  • noun:   an abnormal passage leading from a suppurating cavity to the body surface

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Search for sinus at other dictionaries: OneLook, Oxford, American Heritage, Merriam-Webster, Wikipedia

See sinus used in context: 6 poetry verses, 34 definitions

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