atrium

• Nom désignant soit une cavité communiquant avec d'autres voies, comme l'une des deux cavités supérieures du cœur, soit un espace central ouvert sur le ciel dans un bâtiment.

A noun referring to either a chamber connected to other passageways, such as one of the two upper chambers of the heart, or the central open-to-sky area in a building.

1. Heart chamberB2formalmedical

   One of the two upper chambers of the heart that receive blood from the veins and pump it into the ventricles.

   Atrium cardiaque

   • The right atrium receives deoxygenated blood from the body.
   • An atrial fibrillation is a condition affecting the heart's atria.
   • The surgeon carefully examined the left atrium during the procedure.

   Synonymesauricle

2. Central courtyardB1formal

   A large open central area within a building, often with a glass roof, that lets in light and air.

   Atrium

   • The hotel's atrium was filled with tropical plants and a fountain.
   • Guests gathered in the atrium for the welcome reception.
   • The office building features a stunning glass-roofed atrium.

   Synonymescourtcourtyardquadrangle