Where does “Desmos” come from?

Desmos (Translingual) comes from Ancient Greek δεσμός, from Ancient Greek δέω, from Proto-Indo-European deh₁- — to bind.

Ancestry of “Desmos”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	δεσμός	bond, fetter; collar, halter; bondage,...
2	Ancient Greek	δέω	I bind, tie, fasten, fetter; To lack, need,...
3	Proto-Indo-European	deh₁-	to bind

Desmos — Etymology, Origin & Word History | Etymology Explorer