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.

(astronautics) a type of spacecraft propulsion, whereby electric fields accelerate ions out the exhaust to provide motive force

One who designs and implements software solutions.

(computing) An application that searches for, and retrieves, data based on some criteria, especially one that searches the Internet for documents containing specified words.

One who practices sound engineering.

A scientist or engineer whose speciality is genetic engineering.

A heat engine of the external combustion piston engine type.

To derive or duplicate the design, technical specifications, manufacturing methods, or functionality of an object by studying an existing product, prototype, etc.