Definition of mainframe in English:


Syllabification: main·frame
Pronunciation: /ˈmānˌfrām


  • 1A large high-speed computer, especially one supporting numerous workstations or peripherals.
    More example sentences
    • IBM has tried to keep customers interested by adding Linux support to its mainframe boxes.
    • IBM has shuffled a huge chunk of its mainframe support operations off to South Africa in a bid to cut costs.
    • Thirteen years ago, three airlines pooled their mainframe computing systems and created Worldspan.
  • 2The central processing unit and primary memory of a computer.

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