mainframe

noun

main·​frame ˈmān-ˌfrām How to pronounce mainframe (audio)
1
: a large, powerful computer that can handle many tasks concurrently and is usually used commercially
… the million-dollar mainframe computers that took up entire floors of corporate premises …John Derbyshire
2
dated : a computer with its cabinet and internal circuits especially when considered separately from any peripherals connected to the computer

Examples of mainframe in a Sentence

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In addition, the county spent $80 million on upkeep to the old mainframe and to watchdog the troubled Tyler contract, bringing the total taxpayer cost so far to $265 million for all three deals, the investigation found. A.d. Quig, Chicago Tribune, 10 Apr. 2025 Whether the source of data is an IoT device or an IBM mainframe, the collected data must first be classified and then featurized or otherwise prepared for use before it can be pipelined to a downstream data warehouse or AI application. John Ottman, Forbes, 21 Nov. 2024 In past years, the same report was generated on the county’s old mainframe system, which Tyler helped phase out. A.d. Quig, Chicago Tribune, 12 May 2025 In comparison, an IBM 360 mainframe cost between $7 million and $12 million at the time. ArsTechnica, 14 Apr. 2025 See All Example Sentences for mainframe

Word History

First Known Use

1957, in the meaning defined at sense 2

Time Traveler
The first known use of mainframe was in 1957

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Cite this Entry

“Mainframe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mainframe. Accessed 5 Jun. 2025.

Kids Definition

mainframe

noun
main·​frame ˈmān-ˌfrām How to pronounce mainframe (audio)
: a large fast computer that can do many jobs at once

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