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English definition of “bubble”

bubble

noun [C usually singular] (GOOD PERIOD)    /ˈbʌb.l̩/
a temporary period of very successful economic performance by a country , often followed by sudden economic failure : Japan's economic bubbleEconomics and the state of the economy
(Definition of bubble noun (GOOD PERIOD) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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