1. Any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart) 
2. The central area in a building; open to the sky

Derived forms: atria, atriums

See also: atrial, atrioventricular

Type of: chamber, court, courtyard

Encyclopedia: Atrium

• manacle
• manage
• manageability
• manageable
• manageableness
• manageably
• managed economy
• management
• management consultant
• management consulting
• management control
• management personnel
• manager
• manageress
• managerial
• managerially
• managership
• managing director
• managing editor
• Managua
• manakin
• Manama
• manana
• Manannan
• Manassa Mauler