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Definition metro in British English

metro noun

[countable] noun
/ˈmetrəʊ/
1

an underground railway system in a city. The usual British word for the underground railway system in London is the tube. The American word is subway.

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2

a city with a population of over one million

Example

People living in Delhi have a higher incidence of diabetes and hypertension compared to other metros like Mumbai.

Synonyms and related words
Definition metro in British English