caldarium
/kælˈdɛriəm/
noun
- A room in an ancient Roman bath complex that contained a hot bath or was heated for hot bathing.
- The caldarium was the hottest room in the Roman bathhouse, with steam rising from the heated pool.
- Visitors to the ancient baths would move from the caldarium to the frigidarium for a cold plunge.
- Archaeologists uncovered the mosaic floor of a well-preserved caldarium in the ruins of Pompeii.