Where does “سديم” come from?

سديم (Arabic) comes from Arabic د, from Arabic اِسْتَخْدَمَ — to use, hire.

سديم (Arabic): mist, haze; nebula

Definitions

Step	Language	Word	Meaning
1	Arabic	د	—
2	Arabic	اِسْتَخْدَمَ	to use, hire

سديم — Etymology, Origin & Word History | Etymology Explorer