[doo-op-uh-lee, dyoo-] 
| the market condition that exists when there are only two sellers. Compare monopoly (def. 1), oligopoly. |
| du·op·o·ly (dōō-ŏp'ə-lē, dyōō-) n. An economic or political condition in which power is concentrated in two persons or groups. [duo- + (mono)poly.] |
Duopoly
A situation in which two companies own all or nearly all of the market for a given type of product or service.
Investopedia Commentary
This is very similar to a monopoly, where only one company dominates the market.
Related Links
Antitrust Defined
Economics Basics Tutorial
See also: Antitrust, Monopoly, Monopsony, Oligopoly, Perfect Competition, Price Fixing
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