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：tono-, ton-, -tonia, -tonic, -tonous, -tony (sound)

【来源及含义】Greek > Latin: sound, tone; [Greek tonos, "that which is stretched, a stretching, a straining, a pitch of the voice, a musical note"]

【同源单词】aerotonometer, aerotonometry, atonal, atonic, barytone, detonate