atrium Definition in the Cambridge English Dictionary
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Definition of “atrium” - English Dictionary

Definition of "atrium" - British English Dictionary

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atriumnoun [C]

uk   us   /ˈeɪ.tri.əm/ (plural atria or atriums)

atrium noun [C] (ROOM)

a very ​largeroom, often with ​glasswalls or ​roof, ​especially in the ​middle of a ​largeshop or ​officebuilding

atrium noun [C] (HEART)

specialized anatomy (also auricle) one of the two ​spaces at the ​toppart of the ​heart that ​receiveblood from the veins and ​push it down into the ventricles (= ​lowerspaces)
(Definition of atrium from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

Definition of "atrium" - Business English Dictionary

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atriumnoun [C]

uk   us   /ˈeɪtriəm/ (plural atria, or atriums)
a large ​opencentralarea in a ​public or ​commercialbuilding, often with a glass roof, and sometimes containing ​plants and a ​pool: The 130,000-square-feet of ​officespace surrounds an atrium.
(Definition of atrium from the Cambridge Business English Dictionary © Cambridge University Press)
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