acid-free Meaning in the Cambridge English Dictionary
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Meaning of “acid-free” in the English Dictionary

"acid-free" in British English

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uk   us   /ˌæs.ɪdˈfriː/
Acid-free ​paper does not ​contain any ​harmfulacid that can ​damagedocuments, ​paintings, etc.: The ​books are ​printed on acid-free ​paper so they will last for ​generations.
(Definition of acid-free from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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