Machine that produces useful energy of motion from some other form of energy. The term is usually restricted to combustion engines, which burn fuel. These machines include the steam engine
, diesel engine
, jet engine
, and rocket
engine. Such engines are distinguished from electric motors which, in providing their power, do not directly alter the chemical or physical composition of a substance. Combustion engines are of two main kinds: an external
combustion engine burns its fuel outside the chamber in which motion is produced. In a steam locomotive
, for example, the fire box is separate from the cylinders. An internal combustion engine
burns its fuel and develops motion in the same place.
a machine with moving parts that converts power into motion.
a thing that is the agent or instrument of a particular process:
exports used to be the engine of growth.
a railroad locomotive.
a mechanical device or instrument, esp. one used in warfare:
a siege engine.
a twin-engined helicopter.
•Aladdin • stand-in
•Borodin • Baffin • elfin
, griffin, tiffin
•dolphin • endorphin • bowfin
•ragamuffin • paraffin • perfin
•bargain • Begin • Kosygin
•imagine • margin • engine
, pigeon, smidgen, wigeon
•stool pigeon • wood pigeon • origin
•Pugin • virgin
†contrivance, artifice XIII; †ingenuity, genius XIV; B.
machine of war XIII; mechanical contrivance XIV; complex machine (later spec. as source of power) XVII. — OF. engin
:- L. ingenium
natural quality or disposition, talents, genius, clever device.