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[kal-dair-ee-uh m] /kælˈdɛər i əm/
noun, plural caldaria
[kal-dair-ee-uh] /kælˈdɛər i ə/ (Show IPA)
(in an ancient Roman bath) a room having a hot bath.
Origin of caldarium
1745-55; < Latin: noun use of neuter of caldārius of warming, equivalent to cal(i)d(us) warm (cal(ēre) to be warm + -idus -id4) + -ārius -ary; see -ium, -arium Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for caldarium
Historical Examples
  • The caldarium is well preserved; only a part of the vaulted 206 ceiling has been destroyed.

  • A doorway led from the tepidarium into the caldarium, or vapor-bath.

    Museum of Antiquity L. W. Yaggy
  • This alveus would accommodate eight bathers, that in the men's caldarium perhaps ten.

  • The cold bath, in distinction from the caldarium, the hot bath.

  • These differ, because the caldarium is only melted, and is brittle to the hammer; whereas the regulare is malleable or ductile.

    De Re Metallica Georgius Agricola
  • Coming from these two sources the caldarium must have been, indeed, impure.

    De Re Metallica Georgius Agricola
  • The caldarium, like those of the public baths, had a bath basin and a semicircular niche for the labrum.

  • See Note 16, p. 511, for discussion of yellow and caldarium copper.

    De Re Metallica Georgius Agricola
  • There was a place for another draft fire under the women's caldarium.

  • Then he throws it into the tub containing hot water, for the caldarium copper is finer if quenched in hot water.

    De Re Metallica Georgius Agricola
British Dictionary definitions for caldarium


noun (pl) -daria (-ˈdɛərɪə)
(in ancient Rome) a room for taking hot baths
Word Origin
C18: from Latin, from calidus warm, from calēre to be warm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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