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1. Oxford American Dictionary

   atrium

   • IPA[ˈātrēəm]

   美式

   • n.
     an open-roofed entrance hall or central court in an ancient Roman house.；a central hall or court in a modern building, with rooms or galleries opening off it, often glass-covered.

   • noun: atrium, plural noun: atria

2. • 釋義

   n.

   名詞

   • 1. an open-roofed entrance hall or central court in an ancient Roman house.
   • ▪ a central hall or court in a modern building, with rooms or galleries opening off it, often glass-covered.
   • 2. each of the two upper cavities of the heart from which blood is passed to the ventricles. The right atrium receives deoxygenated blood from the veins of the body; the left atrium receives oxygenated blood from the pulmonary vein.