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

词根词缀：diplo-, dipl-

【来源及含义】Greek: double [two-fold]

【同源单词】diplobacillus, diplobacteria, diplobacterium, diploblastic, diplocardia, diplocardiac