caldarium

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UK/kælˈdɛəɹi.əm/US/kælˈdɛɹi.əm/

noun

In Roman baths, the hottest room, with a plunge-pool. It preceded the tepidarium and frigidarium.

OriginLatin caldārium →
Scrabble 14
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Meanings

nouncaldarium (plural caldariums or caldaria)

plural caldariums · plural caldaria

  1. historicalIn 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.
  3. biologyAn intermediate or warm greenhouse.

    There is a pretty large glass-house, one-half being a caldarium, the other a tepidarium

    1851, The Floricultural Cabinet and Florist's Magazine, page 184

Synonyms & antonyms

Also see
calidarium

Origin

  1. Latincaldārium“room containing warm water for bathing”
  2. Englishcaldarium

Unadapted borrowing 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 (“to be warm or hot; glow”).

More words from Latin

Full word history & related roots →

Rhymes & wordplay

Rhymes with caldarium

herbariumfusariumimaginariumvivariumsamariumcolumbariumseaquariumoceanariumarmamentariumacarinariumallylsamariumantiquariumaquaterrariumargentarium-ariumascidiariumaviculariumbalsamariumbullariumbunariumcalendariumcalidariumcalvariumcanarium
All rhymes →
Cite this entry
APA

caldarium. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/caldarium

MLA

“caldarium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/caldarium. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “caldarium,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/caldarium.

Source: caldarium on Wiktionary, CC BY-SA 4.0.