The subfield of engineering concerned with applying a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software.

A scientist or engineer whose speciality is genetic engineering.

(sociology) Use of numerical data to inform social programs.

present participle of social engineer

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.

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

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

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.

One who designs and implements software solutions.

The manufacturing of products with a degree of precision defined by individual molecules or atoms