In ancient Roman architecture, a room or bath lined with white marble or a white-colored substance, or a place where white substances were processed.
From Latin albus meaning 'white' plus the suffix -arium meaning 'place for' or 'related to.' Romans created specific named rooms for different functions using this productive -arium suffix.
The Romans were so systematic about naming rooms that they basically had a Latin suffix factory—the -arium ending alone gave us aquarium, terrarium, auditorium, and hundreds of other 'place for' words still used today!
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