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duopoly

American  
[doo-op-uh-lee, dyoo-] / duˈɒp ə li, dju- /

noun

  • duopolies
    plural
  1. the market condition that exists when there are only two sellers.


duopoly British  
/ ˌdjʊɒpəˈlɪstɪk, djʊˈɒpəlɪ /

noun

  1. a situation in which control of a commodity or service in a particular market is vested in just two producers or suppliers

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of duopoly

First recorded in 1915–20; duo- + (mono)poly

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Sinner and Alcaraz produced a clean sweep of the Grand Slam titles in 2024 and 2025, winning four majors apiece in a duopoly which has morphed into a generational duel.

From BBC Aug. 21, 2026

They plan to do the booking in house, to add a dance music option in downtown that isn’t from the mega-promoter duopoly or an after-hours gig.

From Los Angeles Times Jul. 8, 2026

Czech 26th seed Mensik has long been earmarked as a talent who can provide a credible challenge to the duopoly of Sinner and Alcaraz.

From BBC Jun. 5, 2026

This month the duopoly joined New York City Comptroller Mark Levine’s campaign to stop Exxon Mobil from vamoosing to Texas.

From The Wall Street Journal May 18, 2026

In a league defined by a Celtic-Rangers duopoly so entrenched that it’s known as the Old Firm, simply pulling into contention is cause for celebration.

From The Wall Street Journal May 15, 2026

Look for strong proprietary intellectual property positions and firms with near monopolies or duopolies over their markets and products that are hard to substitute.

From Barron's Jan. 28, 2026

“They usually lead to bigger companies trying to monopolize certain routes and regions. Monopolies or duopolies in turn usually lead to market abuse, price gouging and deteriorating quality of services.”

From Seattle Times Dec. 25, 2023

But they also undoubtedly protected age-old institutions of journalism that might have otherwise been crushed by ad duopolies and the troubling economics of running a media business in the modern age.

From The Verge Apr. 14, 2022

More than a decade ago, CBS had just one station in New York, and the company was interested in duopolies — TV lingo for owning two stations in a single market.

From Los Angeles Times Jan. 24, 2021

Monopolies, duopolies and cartels make up the bulk of the manufacturing and mining sectors - especially in the wake of the recent tsunami of mergers and acquisitions.

From Russian Roulette: Russia's Economy in Putin's Era by Samuel Vaknin

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