Nanoengineering is the practice of engineering on the nanoscale. It derives its name from the nanometre, a unit of measurement equalling one billionth of a meter. Nanoengineering is largely a synonym for nanotechnology, but emphasizes the engineering rather than the pure science aspects of the field.Nanoengineering is the application extension of Nanotechnology, which is a collective term for a range of new technologies that involve the manipulation of matter at small scales, typically 0.2-100 nanometres.