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English definition of “obsolescence”

obsolescence

noun [U]     /ˌɒb.səˈles.əns/ US  /ˌɑːb-/
the quality of being obsolete : Mobile phone technology is developing so quickly that many customers are concerned about obsolescence.Old or old-fashionedThe elderly built-in/planned obsolescence the fact that a product is intentionally designed and made so that it will not last for a long time Old or old-fashionedThe elderly
(Definition of obsolescence noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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