Definition of legacy in English:


Line breaks: leg¦acy
Pronunciation: /ˈlɛgəsi

noun (plural legacies)


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  • Denoting or relating to software or hardware that has been superseded but is difficult to replace because of its wide use.
    More example sentences
    • Then new projects that could have gone with the legacy platform start going to the new one.
    • None of these legacy ports are able to handle the high bandwidth peripherals of today.
    • The legacy server may reside on a different machine and is the third tier in our architecture.


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' (see legate).

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