1. plural of atrium: open central courts or halls in buildings, often with skylights
Usage: architecture
2. plural of atrium: upper chambers of the heart that receive blood from veins
Usage: anatomy; medical

Examples

• The hotel’s two atriums featured glass ceilings and tropical plants.
• Modern office buildings often have large atriums as central gathering spaces.
• The shopping mall’s atriums were filled with natural light.
• Both atriums of the heart must function properly for healthy circulation.
• The architect designed multiple atriums to bring light into the interior spaces.
• Doctors examined the patient’s atriums using an echocardiogram.