A combustion engine that isn't on the move, it's stationary regardless of engine speed. Applications for such a engine are typically generators for large buildings, such as hospitals where a heavy duty diesel engine (truck engine) is connected to a generator which in turn generates electricity.

Stationary engines are used in different types of equipment, such as pumps, generators, mills and factory machinery. This is due to the fact that stationary engines have a framework that does not move, and are used in immobile equipment.

engine hour is the number of hours that an engine has been running. most heavy equipment and stationary engines such as generators or pumps will have an hour gauge on them. these assist in maintianence records etc

The homophone for stationary is stationery.

stationary friction is when friction is happening on an object that is stationary.(STATIONARY MEANS STAYS STILL, OR NO MOVEMENT)