noun
: a system of heating (as for a building) in which steam generated in a boiler is piped to radiators in the various parts of the system with the condensed steam being returned to the boiler for recirculation
noun
: a system of heating (as for a building) in which steam generated in a boiler is piped to radiators in the various parts of the system with the condensed steam being returned to the boiler for recirculation
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012