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(fù)數(shù)】 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(shù)賣方控制的市場(chǎng)狀況。因?yàn)橘u主極少，以至賣主的任何行為都可能對(duì)價(jià)格產(chǎn)生實(shí)質(zhì)影響，從而對(duì)其競(jìng)爭(zhēng)對(duì)手產(chǎn)生相當(dāng)大的沖擊影響力

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

【引伸】
ol.igop.olis.tic