English

Definition of legacy adjective from the Oxford Advanced Learner's Dictionary

 

legacy

 adjective
adjective
BrE BrE//ˈleɡəsi//
 
; NAmE NAmE//ˈleɡəsi//
 
 
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[only before noun] used to describe a computer system or product that is no longer available to buy but is still used because it would be too difficult or expensive to replace it How can we integrate new technology with our legacy systems? legacy hardware/software Legacy hardware and software should be able to cope with the website. Word Origin late Middle English (also denoting the function or office of a deputy, especially a papal legate): from Old French legacie, from medieval Latin legatia ‘legateship’, from legatus ‘person delegated’, past participle of legare ‘depute, delegate, bequeath’.
See the Oxford Advanced American Dictionary entry: legacy

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