era

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e·ra / ˈi(ə)rə; ˈerə/ • n. a long and distinct period of history with a particular feature or characteristic: the era of glasnost. ∎  a system of chronology dating from a particular noteworthy event: the dawn of the Christian era. ∎  Geol. a major division of time that is a subdivision of an eon and is itself subdivided into periods: the Mesozoic era.

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