mainframelike

As a noun terms

is .

As an adjective mainframelike is

resembling or characteristic of a mainframe computer.

As a noun mainframe

is (computer hardware) a large, powerful computer able to manage very many simultaneous tasks and communicate with very many connected terminals; used by large, complex organizations (such as banks and supermarkets) where continuously sustained operation is vital.

As an adjective mainframelike is

resembling or characteristic of a mainframe computer.