Where does “δέσμα” come from?

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

δέσμα (Ancient Greek): a bond or fetter

Definitions

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

δέσμα — Etymology, Origin & Word History | Etymology Explorer