(aviation) A member of the flight crew in certain (mainly older) aircraft who monitors and operates many to most aircraft systems.

plural of Stirling engine

An engine that has only a single stage, contrasting to a compound engine, compound locomotive, or triple expansion engine, which use multiple stages to improve efficiency.

plural of simple engine

The metal casting that contains the piston cylinders of an engine.

plural of beam engine

A kind of steam engine where a pivoted overhead beam is used to apply the force from a vertical piston to a vertical connecting rod.

One who engages in social engineering.

To achieve or access by means of social engineering.

(engineering) In a tensile test, the ratio of the applied force to the initial cross-sectional area of the tensile specimen (ignoring the gradual decrease in area resulting from Poisson's ratio).