Steam engine definition

Steam engine means all prime movers using vapors from a boiler for motive power, steam-driven compressors, and steam pumps except steam pumps and similar auxiliaries used only as appurtenances for the operation of a boiler.
Steam engine means all prime movers using vapors from a boiler for motive power,
Steam engine means an engine that derives its power from the direct expansion of steam;

More Definitions of Steam engine

Steam engine means all prime movers using vapors from a boiler for motive power, steam-driven compressors, and steam pumps except steam pumps and similar auxiliaries used