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Related to hypocaust: Caldarium
A space under the floor of an ancient Roman building through which flue gases from a furnace were passed to heat a room or a bath.
[Latin hypocaustum, from Greek hupokauston, from hupokaiein, to light a fire beneath : hupo-, hypo- + kaiein, to burn.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Archaeology) an ancient Roman heating system in which hot air circulated under the floor and between double walls
[C17: from Latin hypocaustum, from Greek hupokauston room heated from below, from hupokaiein to light a fire beneath, from hypo- + kaiein to burn]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a hollow space or system of channels in the floor or walls of some ancient Roman buildings that provided a central heating system by distributing the heat from a furnace.
[1670–80; < Latin hypocaustum < Greek hypókauston room heated from below =hypo- hypo- + kaustón, neuter of kaustós heated, burned; see caustic]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A space beneath the floor in an ancient Roman villa in which hot air from a fire or furnace was circulated to heat the house.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited