what does atrium mean?
<answer> Atrium means  any chamber that is connected to other chambers or passageways. <context> Dictionary entry overview: What does atrium mean? • ATRIUM (noun) The noun ATRIUM has 2 senses: 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 Familiarity information: ATRIUM used as a noun is rare.