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English definition of “buffer”

buffer

noun [C] (EXTRA SUPPLY)    /ˈbʌf.ər/ US  //
an extra supply of materials that a company keeps in order to prevent a situation where none are available : " Just-in-time production " means that no buffer stocks are held in the factory .Also, extra, and in addition
(Definition of buffer noun (EXTRA SUPPLY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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