Where does “synthorax” come from?

synthorax (English) comes from English syn, from English synonym, from Middle English sinonyme, from Latin synōnymum, from Ancient Greek συνώνυμος, from Ancient Greek σῠν-, from Ancient Greek σύν, from Proto-Hellenic *ksún — beside, with.

synthorax (English): In dragonflies and damselflies, the mesothorax and metathorax when fused together

Definitions

  1. In dragonflies and damselflies, the mesothorax and metathorax when fused together

Ancestry of “synthorax”, step by step

synthorax traces back through two separate lines of ancestry.

via English syn

StepLanguageWordMeaning
1EnglishsynThat has a torsion angle between 0° and 90°
2EnglishsynonymA word whose meaning is the same as that of...
3Middle Englishsinonyme
4Latinsynōnymumsynonym
5Ancient GreekσυνώνυμοςHaving the same name; Having only one meaning:...
6Ancient Greekσῠν-together; with, together
7Ancient Greekσύνbeside, with
8Proto-Hellenic*ksúnbeside, with

via English thorax

StepLanguageWordMeaning
1EnglishthoraxThe region of the mammalian body between the neck...
2Latinthōraxchest, thorax
3Ancient Greekθώραξcorselet; linen jerkin; coat of mail, cuirass
Every word from Proto-Hellenic *ksúnEvery word from Ancient Greek σῠν-Every word from Ancient Greek σύν