名詞 oligopoly:

1. (economics) a market in which control over the supply of a commodity is in the hands of a small number of producers and each one can influence prices and affect competitors

ol.i.gop.o.ly

n.（名詞）
【復數】 ol.i.gop.o.lies
A market condition in which sellers are so few that the actions of any one of them will materially affect price and have a measurable impact on competitors.
寡頭賣主壟斷：一種由少數賣方控制的市場狀況。因為賣主極少，以至賣主的任何行為都可能對價格產生實質影響，從而對其競爭對手產生相當大的沖擊影響力

來源：
oligo-
oligo-
(mono)poly
(mono)poly

【引伸】
ol.igop.olis.tic