[ eer-uh, er-uh ]
/ ˈɪər ə, ˈɛr ə /
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a period of time marked by distinctive character, events, etc.: The use of steam for power marked the beginning of an era.
the period of time to which anything belongs or is to be assigned: She was born in the era of hansoms and gaslight.
a system of chronologic notation reckoned from a given date: The era of the Romans was based upon the time the city of Rome was founded.
a point of time from which succeeding years are numbered, as at the beginning of a system of chronology: Caesar died many years before our era.
a date or an event forming the beginning of any distinctive period: The year 1492 marks an era in world history.
Geology. a major division of geologic time composed of a number of periods.



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Origin of era

1605–15; <Late Latin aera fixed date, era, epoch (from which time is reckoned), probably special use of Latin aera counters (plural of aes piece of metal, money, brass); cognate with Gothic aiz,Old English ārore, Sanskrit ayas metal
1. See age.

Definition for era (2 of 2)


Also era Baseball. earned run average.
Emergency Relief Administration.
Equal Rights Amendment: proposed 27th amendment to the U.S. Constitution that would prohibit discrimination on the basis of sex.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for era (1 of 2)

/ (ˈɪərə) /


a period of time considered as being of a distinctive character; epoch
an extended period of time the years of which are numbered from a fixed point or eventthe Christian era
a point in time, esp one beginning a new or distinctive periodthe discovery of antibiotics marked an era in modern medicine
geology a major division of geological time, divided into several periodsthe Mesozoic era
C17: from Latin aera counters, plural of aes brass, pieces of brass money

British Dictionary definitions for era (2 of 2)

/ (ˈiːrə) /

n acronym for

(in Britain) Education Reform Act: the 1988 act which established the key elements of the National Curriculum
(in the US) Equal Rights Amendment: a proposed amendment to the US Constitution enshrining equality between the sexes
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for era

[ îrə ]

A division of geologic time, longer than a period and shorter than an eon.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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