Meaning of “mainframe” in the English Dictionary

business-english dictionary

"mainframe" in American English

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mainframenoun [ C ]

us /ˈmeɪnˌfreɪm/

a large computer that can be used to do several things at once and which is usually used by a number of people

(Definition of “mainframe” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"mainframe" in Business English

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mainframenoun [ C ]

uk /ˈmeɪnfreɪm/ us also mainframe computer IT

a very large powerful computer that many people can use at the same time:

When a system running on a mainframe becomes outdated, there are a variety of options for upgrading.

(Definition of “mainframe” from the Cambridge Business English Dictionary © Cambridge University Press)