 ##  [Hypocaust](/hypocaust) 

  ##  [Hypocaust](https://humanitites.quantumdictionary.io/hypocaust-0) 

  
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**Humanities &amp; Arts Dictionary**

 
Definition

An ancient Roman underfloor heating system in which a furnace (praefurnium) produces hot gases that circulate beneath a raised floor supported by pilae (suspensurae) and through vertical wall flues (tubuli) to warm rooms—commonly used in bath complexes and selected domestic spaces.