Etymology

atrium

a·tri·um
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Today it means: A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings. Full definition →

Latin ātrium
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The story

  1. Latin · borrowed fromātrium“entry hall”
  2. English todayatrium

From Latin ātrium (“entry hall”), from Etruscan.

Etymology from Wiktionary, CC BY-SA 4.0.