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English definition of “Greenwich Mean Time”

Greenwich Mean Time

noun [U]     /ˌɡren.ɪtʃˈmiːn.taɪm/ (abbreviation GMT)
the time at Greenwich, Greater London, that world time zones are based on → See also British Summer TimeDays and times of day
(Definition of Greenwich Mean Time noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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