Definitions

from The Century Dictionary.

  • noun The Roman name for a stove or heating apparatus.
  • noun A room in the Roman thermæ, or public baths, in which water was heated to the highest temperature. See bath, 5.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun In Roman baths, the hottest room, with a plunge-pool. It preceded the tepidarium and frigidarium.
  • noun In modern spas, a room with a hot floor.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin caldārium ("room containing warm water for bathing"), substantive of caldārius ("of, pertaining to or suitable for bathing"), from caldus ("warm, hot") + -ārius, alternative form of calidus, from caleō ("I am warm or hot; glow").

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Examples

  • The Roman-style baths include an apodypterium , or changing room; a tepidarium , or warm room; and a caldarium , or hot room, along with a domed chamber for housing firewood.

    Snapshot of a Civilization in the Making Christian C. Sahner 2010

  • This transfer from the "Kaisersaal" to the six niches of the frigidarium probably took place in the later 4th century A.D., when the imperial cult was abolished and the "Kaisersaal" transformed into a third hot water room or caldarium.

    The Antonine Dynastic Gallery at Sagalassos 2008

  • The sight hindered her from her bath, so that she went not farther in nor washed, but sat staring at the Princess, till she had made an end of bathing and coming forth of the caldarium donned her raiment, whereupon beauty was added to her beauty.

    The Book of The Thousand Nights And A Night 2006

  • To the left of the Hellenic gate is the palaestra, an open area where young athletes would have exercised, and behind this is the Roman bath, divided as usual into frigidarium, caldarium, and tepidarium, depending on the temperature of the water.

    Log of the Eclipse (5) Walter Jon Williams 2006

  • The caldarium still shows the hypocaust underfloor heating system.

    Log of the Eclipse (5) Walter Jon Williams 2006

  • The caldarium still shows the hypocaust underfloor heating system.

    Archive 2006-05-01 Walter Jon Williams 2006

  • It was two stories and built in a U shape, enclosing a palaestra or exercise yard, where athletes and other citizens would have exercised naked before hitting the showers— well, the caldarium— in the building itself.

    Log of the Eclipse (11) Walter Jon Williams 2006

  • In the bath complex can be found an Olympic-sized caldarium.

    Archive 2006-08-01 Walter Jon Williams 2006

  • In the bath complex can be found an Olympic-sized caldarium.

    Log of the Eclipse (11) Walter Jon Williams 2006

  • To the left of the Hellenic gate is the palaestra, an open area where young athletes would have exercised, and behind this is the Roman bath, divided as usual into frigidarium, caldarium, and tepidarium, depending on the temperature of the water.

    Archive 2006-05-01 Walter Jon Williams 2006

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