Meaning of “buffer” in the English Dictionary

"buffer" in British English

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buffernoun

uk /ˈbʌf.ər/ us /ˈbʌf.ɚ/

buffer noun (PROTECTION)

[ C ] something or someone that helps protect from harm:

I bought a house as a buffer against inflation.

[ C ] the metal parts at the front and back of a train or at the end of a track, that help protect the train and reduce damage if the train hits something

[ C or U ] a chemical that keeps a liquid from becoming more or less acidic

bufferverb

uk /ˈbʌf.ər/ us /ˈbʌf.ɚ/

(Definition of “buffer” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"buffer" in American English

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buffernoun [ C ]

us /ˈbʌf·ər/

something that helps protect from harm:

[ C ] Some people buy stocks as a buffer against inflation.

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

"buffer" in Business English

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buffernoun [ C ]

uk /ˈbʌfər/ us

someone or something that provides protection against difficult situations, problems, angry people, etc.:

serve as/act as/be a buffer Savings can be a buffer during times of financial hardship.
a buffer against sth A special committee was formed to serve as a buffer against customer complaints.
a buffer between sth and sth HR was called in to act as a buffer between managers and disgruntled employees.

IT the part of a computer's memory that temporarily stores information before exchanging it with another piece of equipment such as a printer, keyboard, or external drive

bufferverb [ T ]

uk /ˈbʌfər/ us

to provide protection against difficult situations, problems, angry people, etc.:

Interest-rate concerns were buffered by some better-than-expected earnings reports.

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