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1. Oxford Dictionary

   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

2. • 釋義
   • 相關詞

   n.

   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

   coronary sinus

   • n.
     a wide venous channel about 2.25 centimeters in length that receives blood from the coronary ...

   Oxford American Dictionary

   sinus venosus

   • n.
     the first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.

   Oxford Dictionary

   sinus venosus

   • n.
     the first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.

   Oxford American Dictionary

3. • 更多解釋

   sinus

   • IPA[ˈsīnəs]

   美式

   • n.
     a cavity within a bone or other tissue, especially one in the bones of the face or skull ...

   Oxford American Dictionary