1. The entrance hall and chief apartment in a Roman house; a fore-court.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• atriff,
• strim,
• aqurium,
• traum,
• autium,
• aurtum,
• atruim,
• antrium,
• attrium,
• atrum,
• atrue,
• tatrum,
• atium,
• atril,
• artium,
• atrim,
• aqarium,
• atri,
• axtium,
• acctium

• athyrium.

The adjective form of the word "atrium" is "atrial".

The plural of the "atrium" can be the "atriums".

The singular of the "atrium" can be the "atrium".