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  1. sinus

    • IPA[ˈsʌɪnəs]

    英式

    • n.
      a cavity within a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities.;an irregular venous or lymphatic cavity, reservoir, or dilated vessel.
    • noun: sinus, plural noun: sinuses

    • 釋義

    名詞

    • 1. a cavity within a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities.
    • an irregular venous or lymphatic cavity, reservoir, or dilated vessel.
    • an infected tract leading from a deep-seated infection and discharging pus to the surface.
    • a rounded notch between two lobes on the margin of a leaf or petal.
    • 2. relating to or denoting the sino-atrial node of the heart or its function of regulating the heartbeat sinus rhythm sinus tachycardia