Definition of time zone noun from the Oxford Advanced Learner's Dictionary


time zone

BrE BrE//ˈtaɪm zəʊn//
; NAmE NAmE//ˈtaɪm zoʊn//
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one of the 24 areas that the world is divided into, each with its own time that is one hour earlier than that of the time zone immediately to the east a flight crossing several time zones
See the Oxford Advanced American Dictionary entry: time zone