Definitions for "large-scale"
large in area, scope or degree; as, a large-scale attack on AIDS is needed.
constructed or drawn to a big scale{4}; as, large-scale maps. See 3rd scale, n., sense 4.
Does not refer to the physical size of the machinery, even though nearly all the early large-scale computers were also physically very big. It refers rather to the fact that it can solve problems whose scale would severely tax human computers. Solving a system of forty simultaneous equations would be such a problem; it would be almost impossible to solve without an automatic computer.
widespread; applying to all or most members of a category or group.
occurring widely (as to many people); "mass destruction"