mainframe meaning and definition

MAINFRAME noun

Definition of mainframe (noun)

1. a large digital computer serving 100-400 users and occupying a special air-conditioned room
   • synonyms: mainframe computer
2. (computer science) the part of a computer (a microprocessor chip) that does most of the data processing
   • "the CPU and the memory form the central part of a computer to which the peripherals are attached"
   • synonyms: C.P.U., central processing unit, central processor, CPU, processor