caldarium

Etymology
, substantive of, from + , alternative form of , from.

Noun

 * 1) In Roman baths, the hottest room, with a plunge-pool. It preceded the tepidarium and frigidarium.
 * 2) In modern spas, a room with a hot floor.

Etymology
From, via.

Noun

 * 1) warm bath
 * 2) boiler for heating water for the baths
 * 3)  portable stove
 * 1) boiler for heating water for the baths
 * 2)  portable stove
 * 1)  portable stove