Definitions of mainframe

n a large digital computer serving 100-400 users and occupying a special air-conditioned room

mainframe computer
a mainframe computer that is one of the most powerful available at a given time
Type of:
digital computer
a computer that represents information by numerical (binary) digits

n (computer science) the part of a computer (a microprocessor chip) that does most of the data processing

C.P.U., CPU, central processing unit, central processor, processor
Type of:
electronic equipment
equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)
computer hardware, hardware
(computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system

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