sigmoid sinus

/ˌsɪgˈmɔɪd ˌsaɪnəs/
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Definitions of sigmoid sinus
  1. noun
    an S-shaped dural sinus on the temporal and occipital bones
    synonyms: sinus sigmoideus
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    type of:
    sinus, venous sinus
    a wide channel containing blood; does not have the coating of an ordinary blood vessel
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