noun hy·po·caust \ˈhī-pə-ˌkȯst\

Definition of hypocaust

  1. :  an ancient Roman central heating system with underground furnace and tile flues to distribute the heat

Origin and Etymology of hypocaust

Latin hypocaustum, from Greek hypokauston, from hypokaiein to light a fire under, from hypo- + kaiein to burn

First Known Use: 1678

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