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English definition of “obsolete”

obsolete

adjective uk   /ˌɒb.səlˈiːt/ us    /ˌɑːb-/
C1 not in use any more, having been replaced by something newer and better or more fashionable: Gas lamps became obsolete when electric lighting was invented.
(Definition of obsolete from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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