Definitions of mainframe
  1. noun
    a large digital computer serving 100-400 users and occupying a special air-conditioned room
    synonyms: mainframe computer
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    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
  2. noun
    (computer science) the part of a computer (a microprocessor chip) that does most of the data processing
    synonyms: C.P.U., CPU, central processing unit, central processor, processor
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    type of:
    electronic equipment, electronics
    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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