Meanings
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1
verb
to replace something with something newer or more effective
The old model was superseded by a more advanced version.
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2
verb
to render something no longer in use or considered outdated
The law was superseded by more recent legislation.
Thesaurus
Etymology
From Latin supersedere ('to sit above; to be superior to, refrain from'), from super- ('above') + sedere ('to sit'); via Old French superseder and Middle English superseden ('to defer, replace').