Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An economic or political condition in which power is concentrated in two persons or groups.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun economics A market situation in which two companies exclusively provide a particular product or service.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[duo– + (mono)poly.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

By analogy with monopoly based on Greek δυο (dyo, "two") + πωλειν (polein, "to sell").

Examples

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Comments

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  • (noun) - (1) A condition in which there are only two suppliers of a certain commodity, service, etc. The domination of a particular market by two firms. Hence duopolist, one member of a duopoly; duopolize, to engross between two.

    --Sir James Murray's New English Dictionary, 1893

    (2) Special coinage formed from duo, on the analogy of monopolize.

    --Robert Hunter's Encyclopædic Dictionary, 1895

    January 15, 2018