duopoly

noun

du·​op·​o·​ly du̇-ˈä-pə-lē How to pronounce duopoly (audio)
also dyu̇-
plural duopolies
1
: an oligopoly limited to two sellers
2
: preponderant influence or control by two political powers
duopolistic adjective

Examples of duopoly in a Sentence

Recent Examples on the Web
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Spain, the second-richest league after England, remains a duopoly between Barcelona and Real Madrid, who have been champions in 20 of the last 22 seasons. Ian King, CNBC, 3 June 2026 The Conservative Party – the other half of the duopoly that has dominated British politics for more than a century – lost nearly 300 seats. Christian Edwards, CNN Money, 8 May 2026 This question inadvertently shows that we are stuck in a mindset that the duopoly of Republicans and Democrats is the only way to organize our many different political opinions. Lucas Robinson, San Diego Union-Tribune, 7 May 2026 That number will likely fall to two, raising concerns about an effective duopoly in a market that serves 63 million domestic travelers every year. Bloomberg, Mercury News, 7 Apr. 2026 See All Example Sentences for duopoly

Word History

Etymology

duo- + -poly (as in monopoly)

First Known Use

1920, in the meaning defined at sense 1

Time Traveler
The first known use of duopoly was in 1920

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Cite this Entry

“Duopoly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duopoly. Accessed 9 Jun. 2026.

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