First World

The definition of First World is an industrialized and advanced developed country.

(adjective)

North America is an example of a continent in the First World.

See First World in Webster's New World College Dictionary

the countries of the world that are well developed economically and industrially and that have a relatively high standard of living

See First World in American Heritage Dictionary 4

also first world

noun

During the Cold War, the industrialized capitalist nations of the world.

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