suborderWiktionary 原文构词拆分sub-前缀Under, beneath. · Subsidiary, secondary.+order词根/词干词源说明From sub- + order.释义（英文）名词 Noun(taxonomy) A taxonomic category below order and above infraorder.(business) A secondary or subsidiary order (purchase request).Synonym of subordering.动词 Verb(transitive) To arrange in a secondary order.