American English

Definition of obsolescence noun from the Oxford Advanced American Dictionary

 

obsolescence

 noun
noun
NAmE//ˌɑbsəˈlɛsns//
 
[uncountable] (formal)
 
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the state of becoming old-fashioned and no longer useful (= becoming obsolete ) products with built-in/planned obsolescence (= designed not to last long so that people will have to buy new ones)
obsolescent
 
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NAmE//ˌɑbsəˈlɛsnt//
 
adjective
See the Oxford Advanced Learner's Dictionary entry: obsolescence