Sinus meaning

sīnəs
Frequency:
A depression or cavity formed by a bending or curving.
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A fistula leading from a pus-filled cavity.
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A recess or indentation between two lobes or segments, as of a leaf.
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A bend or curve.
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Any cavity or hollow formed by a bending or curving.
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Any of various cavities, hollows, or passages.
  • Any of the air cavities in the skull opening into the nasal cavities.
  • A large channel for venous blood.
  • A dilated part in a blood vessel, etc.
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A rounded depression between two consecutive lobes, as of a leaf.
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A channel leading from a pus-filled cavity.
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A depression or cavity formed by a bending or curving.
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A fistula leading from a pus-filled cavity.
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A recess or indentation between two lobes or segments, as of a leaf.
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A cavity or hollow space in a bone of the skull, especially one that connects with the nose.
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A channel for the passage of a body fluid, such as blood.
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(anatomy) A pouch or cavity in any organ or tissue, especially the paranasal sinus.
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(pathology) An abnormal cavity or passage such as a fistula, caused by the destruction of tissue.
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Origin of sinus

  • Middle English hollow in the body from Medieval Latin from Latin curve, hollow

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin sinus.

    From Wiktionary