duopoly[do̵̅o̅ äp′ə lē, dyo̵̅o̅-]
duopoly definition by Webster's New World
Origin: duo- plush (mono)poly
duopoly definition by American Heritage Dictionary
Origin: duo- + (mono)poly.
duopoly - Business Definition
duopoly - Computer Definition
A condition in which two entities dominate a market. Pronounced "doo-op-a-lee." For example, Windows and Mac are a personal computer duopoly. iOS and Android are a smartphone duopoly.