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• metro
  metro

  noun

  the underground electric railway of Paris, France, Montreal, Canada, Washington, D.C., and other cities.
• metro-
  metro-

  a combining form meaning “measure,” used in the formation of compound words.

metro

¹ American  

[me-troh] / ˈmɛ troʊ /

noun

(often initial capital letter)

• metros
  plural

1. the underground electric railway of Paris, France, Montreal, Canada, Washington, D.C., and other cities.

2. subway.

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metro ² American  

[me-troh] / ˈmɛ troʊ /

adjective

1. metropolitan.

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noun

• metros
  plural

1. metropolis.

2. (often initial capital letter) the government or jurisdiction of a large city.

metro- ³ American  

1. a combining form meaning “measure,” used in the formation of compound words.

   metronome.

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metro- ⁴ American  

1. a combining form meaning “uterus,” used in the formation of compound words.

   metrorrhagia.

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metro- ⁵ American  

1. a combining form representing metropolis or metropolitan in compound words.

   metroflight; metroland; Metroliner.

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metro- ¹ British  

combining form

1. indicating the uterus

   metrorrhagia

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metro- ² British  

combining form

1. indicating a measure

   metronome

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metro ³ British  

/ ˈmɛtrəʊ, metro /

noun

1. an underground, or largely underground, railway system in certain cities, esp in Europe, such as that in Paris

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Other Word Forms

Noun Inflected Forms

• metros
  plural

Etymology

Origin of metro¹

1900–05; < French métro, short for chemin de fer métropolitain metropolitan railroad

Origin of metro²

First recorded in 1900–05; by shortening; or independent use of metro- ³

Origin of metro-³

Combining form representing Greek métron measure

Origin of metro-⁴

Combining form representing Greek mḗtra womb

Example Sentences

See Examples For:

metro metros

Several metro stations were closed, train services were disrupted and thousands of police and paramilitary personnel were deployed.

From BBC ● Oct. 13, 2026

Authorities have closed dozens of metro stations, cancelled several trains coming to Delhi and shut down mobile internet temporarily around the protest site.

From Barron's ● Oct. 10, 2026

Amex couldn’t resist a jab at the other credit-card companies nipping at its lounge heels: It will be the only operator with outlets at the three major metro New York airports.

From The Wall Street Journal ● Oct. 9, 2026

Ahead of the Pryluky attack, the Ukrainian leader had warned this week of warned of intelligence suggesting plans for a major Russian onslaught, and in Kyiv families responded by heading to metro stations for shelter.

From BBC ● Oct. 8, 2026

I worked my way to the metro region section and stopped.

From "The Line Tender" by Kate Allen

For the first time in three years, pending home sales declined in all 50 of the most populous U.S. metros.

From The Wall Street Journal ● Oct. 12, 2026

The data release also covers the London Underground, trams, metros and other light rail services.

From BBC ● Sep. 24, 2026

These are the top five metros where for-sale listings saw the biggest increase in the number of days spent on the market, according to data provided by Realtor.com.

From MarketWatch ● Jul. 14, 2026

Prices fell from year-ago levels in 11 of the 19 metros for which data was available—Detroit was not included due to data collection issues—and was about flat in Miami.

From Barron's ● Apr. 25, 2026

The company says it continues to lay the groundwork to expand its Robotaxi service to further major U.S. metros, including with testing and permitting, in order to quickly launch new markets once it’s ready.

From The Wall Street Journal ● Apr. 23, 2026

Related Words

• rail line
• railway
• subway