词根词缀：adelpho-, adelph-, -adelphia, -adelphous

【来源及含义】Greek: brother

【同源单词】Adelphi, adelphic, adelphogamy, adelpholite, adelphoparasite, adelphophagy

词根词缀：di-, dicho-, dich-

【来源及含义】Greek: number two; twice, divided, double; unalike; a number used as a prefix

【同源单词】diacanthous, diacid, diadelphous, dianthous, diarch, diarchy