Where does “عدد” come from?

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

عدد (Arabic): number; numeral; years of life

Definitions

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

عدد — Etymology, Origin & Word History | Etymology Explorer