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[doo-op-uh-lee, dyoo-] /duˈɒp ə li, dyu-/
noun, plural duopolies.
the market condition that exists when there are only two sellers.
Compare monopoly (def 1), oligopoly.
Origin of duopoly
1915-20; duo- + (mono)poly Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for duopoly
  • Because in the face of this cozy duopoly, email innovation has slowed to a crawl.
  • The electoral system has created a built-in political duopoly.
  • For two decades they have enjoyed a duopoly in this part of the market, roughly splitting sales between them.
  • Better to have a vibrant multi-party system with narrower, coherent parties than the current duopoly.
British Dictionary definitions for duopoly


noun (pl) -lies
a situation in which control of a commodity or service in a particular market is vested in just two producers or suppliers
Derived Forms
duopolistic (ˌdjʊɒpəˈlɪstɪk) adjective
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
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