pentarchy

五的英語翻譯：

five
【醫(yī)】 pent-; Quinq

國的英語翻譯：

country; nation; national; state

聯(lián)合的英語翻譯：

unite; ally; connect; link; associate; band; joint; combination; federation
linkage; union; alliance
【計】 uniting
【化】 union
【醫(yī)】 association; coadunation; coadunition; symphysis; syndesis; union
【經(jīng)】 associate; coalition; combination; consolidate; consortium; fusion
union