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Definitions

mainframe

[meyn-freym] / ˈmeɪnˌfreɪm /
NOUN
central processing unit
Synonyms






Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“It was a shot to the heart and the chest and the mainframe with Luka,” James told reporters.

From Los Angeles Times • Apr. 9, 2026

In February, IBM stock posted its worst decline in 25 years—tumbling sharply on news that Anthropic had released AI tools that could help with modernizing Cobol, a programming language mainly run on IBM mainframe computers.

From The Wall Street Journal • Mar. 17, 2026

“The mainframe serves as the backbone for the world’s largest enterprises managing the most complex and critical workloads,” Woodring wrote, ticking off banking systems, airline reservations, and transaction processing as a few examples.

From Barron's • Feb. 25, 2026

“The idea of shifting off of mainframe is not a new concept,” he said in a note to clients.

From MarketWatch • Feb. 24, 2026

Dozens of terminals could be built, all linked to the mainframe by a telephone line, and everyone could be working—online—all at once.

From "Outliers" by Malcolm Gladwell




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