era

¹ American  

[eer-uh, er-uh] / ˈɪər ə, ˈɛr ə /

noun

1. 1. a period of time marked by distinctive character, events, etc..

      The use of steam for power marked the beginning of an era.

   2. Slang. a period of time in a person’s life characterized by something distinctive and noticeable, such as a particular emotional state, relationship, achievement, or interest.

      She’s started wearing all black now that she’s in her sad girl era.

      They are definitely in their flop era and could use a complete makeover.

2. the period of time to which anything belongs or is to be assigned.

   She was born in the era of hansoms and gaslight.

3. 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.

4. 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.

5. a date or an event forming the beginning of any distinctive period.

   The year 1492 marks an era in world history.

6. Geology. a major division of geologic time composed of a number of periods.

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ERA ² American  

abbreviation

1. Baseball. earned run average.

2. Emergency Relief Administration.

3. Equal Rights Amendment: proposed 27th amendment to the U.S. Constitution that would prohibit discrimination on the basis of gender.

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era ¹ British  

/ ˈɪərə /

noun

1. a period of time considered as being of a distinctive character; epoch

2. an extended period of time the years of which are numbered from a fixed point or event

   the Christian era

3. a point in time, esp one beginning a new or distinctive period

   the discovery of antibiotics marked an era in modern medicine

4. geology a major division of geological time, divided into several periods

   the Mesozoic era

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ERA ² British  

/ ˈiːrə /

acronym

1. (in Britain) Education Reform Act: the 1988 act which established the key elements of the National Curriculum

2. (in the US) Equal Rights Amendment: a proposed amendment to the US Constitution enshrining equality between the sexes

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era Scientific  

/ îr′ə /

1. A division of geologic time, longer than a period and shorter than an eon.

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Related Words

See age.

Etymology

Origin of era

First recorded in 1605–15; from 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”; akin to Gothic aiz, Old English ār ore, Sanskrit ayas “metal”

Example Sentences

John Galsworthy’s tales of an affluent family in Victorian and Edwardian England offer a vivid portrait of a vanished era.

From The Wall Street Journal • Apr. 4, 2026

His departure will signal the end of one era and the start of another as Newcastle prepare to lower the average age of the squad.

From BBC • Apr. 4, 2026

Now she faces off with Staley, perhaps the best coach of this era who just walloped Auriemma and the Huskies on the national stage.

From Los Angeles Times • Apr. 4, 2026

Applying this to the era of generative A.I.,

From Slate • Apr. 4, 2026

In my opinion, the central events and achievements of the revolutionary era and the early republic were political.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

Related Words

• age
• cycle
• day
• generation
• stage
• term
• time