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mainframe

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noun main·frame \ˈmān-ˌfrām\

Simple Definition of mainframe

  • : a large and very fast computer that can do many jobs at once

Source: Merriam-Webster's Learner's Dictionary

Full Definition of mainframe

  1. :  a computer with its cabinet and internal circuits; also :  a large fast computer that can handle multiple tasks concurrently

Circa 1964

First Known Use of mainframe

circa 1964

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