Definition of hypocaust
: an ancient Roman central heating system with underground furnace and tile flues to distribute the heat
Origin of hypocaust
Latin hypocaustum, from Greek hypokauston, from hypokaiein to light a fire under, from hypo- + kaiein to burn
First Known Use: 1678
Learn More about hypocaust
Britannica.com: Encyclopedia article about "hypocaust"
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