Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations for the benefit of humankind.

Of or pertaining to the useful or mechanic arts, or to any academic, legal, science, engineering, business, or the like terminology with specific and precise meaning or (frequently, as a degree of distinction) shades of meaning; specially appropriate to any art, science or engineering field, or business.