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English definition of “pop up”

pop up

informal
verb uk phrasal verb with pop   /pɒp/ us    /pɑːp/ (-pp-)
to appear or happen, especially suddenly or unexpectedly: She's one of those film stars who pops up everywhere, on TV, in magazines, on Broadway. The words 'Hard disk failure - program aborted' popped up on the screen.
(Definition of pop up phrasal verb, verb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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