DUOPOLY Meaning of DUOPOLY in English [du.op.o.ly] n, pl -lies [duo- + -poly (as in monopoly)] (1920) 1: an oligopoly limited to two sellers 2: preponderant influence or control by two political powers -- du.op.o.lis.tic adj Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012