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Definition of megacity

megacity

/ˈmɛɡ.əˌsɪt.i/
meg · a · cit · y
Plural:megacities
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megacity Lexical Profile

megacity Game Scores & Validity

• noun

1

A very large city or urban agglomeration, typically defined by the United Nations as having a total population exceeding ten million people.

Example

"Rapid urbanization has transformed several regional hubs in Asia into bustling megacities over the past three decades."

Synonyms
View all synonyms for megacity
Antonyms
View all antonyms for megacity

• Nearby Words

megabucks
megabyte
megachurch
megacity
megaclinium
megacorporation
megadeal

Word Origin & Etymology

Coined in the mid-20th century from the combining form mega- (from Ancient Greek megas, meaning 'great') and city.

Cite this Entry

Wordmom. (2026). Definition of Megacity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/megacity
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