From Longman Dictionary of Contemporary Englishplanned obsolescenceˌplanned obsoˈlescence noun [uncountable] BBREAKwhen a product is deliberately made so that it will soon be replaced by something more fashionable or more technically advanced. This is done so that people will want to buy new things more often.From Longman Business Dictionaryplanned obsolescenceˌplanned obsoˈlescence (also built-in obsolescence)COMMERCE when a product is deliberately made to be old-fashioned or impossible to use after a short period of time, so that people have to replace it → obsolescence