Where does “عد” come from?

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

عد (Arabic): to count; to consider; verbal noun of عَدَّ

Definitions

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

عد — Etymology, Origin & Word History | Etymology Explorer