1. a large open space inside a building, often with a glass roof
Usage: architecture
2. either of the two upper chambers of the heart that receive blood
Usage: anatomy
3. the central court of an ancient Roman house
Usage: historical

Examples

• The hotel’s atrium featured a beautiful fountain and skylight.
• Students gathered in the school’s atrium during lunch break.
• The left atrium receives oxygenated blood from the lungs.
• Blood flows from the atrium to the ventricle during each heartbeat.
• The ancient Roman villa had a spacious atrium at its center.
• Modern office buildings often include an atrium to create an open feeling.
• The shopping mall’s atrium was decorated with holiday lights.