Where does “deesis” come from?

deesis (English) comes from Ancient Greek δέησις, from Ancient Greek δέω, from Proto-Indo-European deh₁- — to bind.

deesis (English): A call to witness; A vehement expression of...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	δέησις	entreaty, petition, want
2	Ancient Greek	δέω	I bind, tie, fasten, fetter; To lack, need,...
3	Proto-Indo-European	deh₁-	to bind

deesis — Etymology, Origin & Word History | Etymology Explorer