There are 2 definitions of era in English:

era1

Line breaks: era
Pronunciation: /ˈɪərə
 
/

noun

1A long and distinct period of history: his death marked the end of an era leading photographers of the Victorian era
More example sentences
  • At least four distinct periods, or eras, define the recent history of Congress.
  • Few eras of American history have undergone as sweeping a reinterpretation by historians in the past forty years as Reconstruction, the turbulent period that followed the Civil War.
  • The structure of the novel, then, makes possible a way of thinking about America that crosses the lines between eras, making American history a single connected story.
1.1A system of chronology dating from a particular event: the dawn of the Christian era
More example sentences
  • The period is further divided into the early Heian and the late Heian, or Fujiwara, eras, the pivotal date being 894, the year imperial embassies to China were officially discontinued.
  • Simply put, it was on that date that the communist era in Bulgaria started.
  • Many of America's great cathedrals of racing date from the Depression era of the film's setting.
1.2 Geology A major division of time that is a subdivision of an aeon and is itself subdivided into periods: the Mesozoic era
More example sentences
  • The division of the Phanerozoic into chronostratigraphic divisions - eras, periods, epochs and ages - has itself evolved over a period of about 200 years.
  • The largest would be the ‘Permo-Triassic’ extinction, between the Permian and Triassic periods, of the Paleozoic and Mesozoic eras.
  • The following table shows the three eras and eleven geological periods that comprise the Phanerozoic.
1.3 archaic A date or event marking the beginning of a new and distinct period of time: the landing of this English governor was an era in their lives

Origin

mid 17th century: from late Latin aera, denoting a number used as a basis of reckoning, an epoch from which time is reckoned, plural of aes, aer- 'money, counter'.

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There are 2 definitions of era in English:

ERA2

Syllabification: ERA

Entry from US English dictionary

abbreviation

1 Baseball Earned run average.
1.1Equal Rights Amendment.

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