Heating /(hēt"ĭng)/

Heat·ing

Heating

a.
  1. That heats or imparts heat; promoting warmth or heat; exciting action; stimulating; as, heating medicines or applications.

Phrases & Compounds
Heating surface
the aggregate surface exposed to fire or to the heated products of combustion, esp. of all the plates or sheets that are exposed to water on their opposite surfaces; -- called also fire surface.