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English definition of “online”

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online

adjective [before noun] uk   /ˈɒn.laɪn/ us    /ˈɑːn.laɪn/
A2 Online products, services, or information can be bought or used on the internet: an online newspaper/magazine/dictionary online banking/shopping
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online

adverb uk   /ˌɒnˈlaɪn/ us    /ˌɑːnˈlaɪn/

online adverb (INTERNET)

A2 bought, used, etc. using the internet: Have you ever bought anything online? This dictionary went online in 1999.be online to be able to use email or the internet: I'll send you my email address once I'm online.
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online adverb (CONNECTED)

connected to a system: The new power station is expected to be online by July. When will the new factory come online (= start production)?
(Definition of online from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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