A piston engine.

plural of ion engine

(thermodynamics) Any device which converts heat energy into mechanical work, by moving heat from a source to a sink.

Any of several types of internal combustion engine in which the power output is directly rotational.

Any engine that generates thrust by expelling matter, especially hot gases produced by igniting a fuel; either a rocket engine or several types of jet engine.

(engineering) The study, design, construction and operation of landfills.

A person who holds an engineering degree from a technical university or equivalent.

Any of several types of engine having cylinders containing reciprocating pistons, in which a crankshaft is turned by pistons moving up and down within cylinders.

A reaction engine that obtains thrust by jet propulsion which forms its jet exclusively from propellant.

The total volume of air/fuel mixture an engine can draw in during one complete engine cycle.