前缀：sy-, syn-, sym-, syl-

【词根含义】：共同,同时

【词根来源】：(sy-用于s, z之前;syl-用于l之前;sym-用于b, p, m之前;syn-用于其它)  来源于拉丁语syn-,希腊语syn或sun-(共同)。

【同源单词】：photosynthesis, synchronise, synchronize, synthesis, synthetic

词根词缀：syn-, sy-, sym-, syl-, sys-

【来源及含义】Greek: with, together with; also by extension: united; same, similar; at the same time

【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units dealing with "equal, identical, same, similar": auto-; emul-; equ-, equi-; homeo-; homo-; iso-; pari-; peer; rhomb-; tauto-.

【同源单词】acrocephalopolysyndactyly, acrocephalosyndactylia, acrocephalosyndactyly, acrosyndesis, allosynapsis, antagonistic symbiosis

词根词缀：the-; them-, themat-, thes-, thet-

【来源及含义】Latin: placing, setting; to place, to put

【相关词根词缀】 Related word families intertwined with "to place, placing, to put; to add; to stay; to attach" word units: fix-; pon-; prosth-; stato-.

【同源单词】anathema, anathematization, anathematize, antithesis, apothecary, boutique