a space below the floor in some ancient Roman buildings, into which hot air was piped to warm the rooms
Origin of hypocaustClassical Latin hypocaustum ; from Classical Greek hypokauston ; from hypokaiein, to heat by applying fire below ; from hypo- (see hypo-) + kaiein, to burn
A space under the floor of an ancient Roman building where heat from a furnace was accumulated to heat a room or a bath.
Origin of hypocaustLatin hypocaustum, from Greek hupokauston, from hupokaiein, to light a fire beneath : hupo-, hypo- + kaiein, to burn.
- An underfloor space or flue through which heat from a furnace passes to heat the floor of a room or a bath.
- An underfloor heating system, even without such an underfloor space or flue, as adapted for modern housing.
Latin hypocaustum, from Ancient Greek ὑπό (hupo, “underneath”) + καίειν (kaiein, “to light a fire, burn”)