plural of chemical engineer

A person who practises chemical engineering.

plural of steam engine

The underlying component that a database management system uses to create, retrieve, update and delete data.

An engineer who designs and coordinates engineering aspects of a construction project

Any engine that converts energy from the sun into electrical or mechanical energy; especially such an engine used for the propulsion of a spacecraft.

An engine that obtains thrust by taking in air at the front, using it to burn fuel, then ejecting the hot combustion products at the rear through a propulsive nozzle.

A piston engine driven by steam (as contrasted, for example, with a steam turbine). / Any heat engine that uses steam as its primary working fluid to do mechanical work. / (Britain) A steam locomotive.

(firefighting) A vehicle used by firefighters to pump water to fight a fire. Typically, a fire engine carries a supply of water and has the ability to connect to an external water supply.

(Britain, dated) The person who drives the engine of a train.