Where does “إِثْمِد” come from?

إِثْمِد (Arabic) comes from Coptic ⲉⲥⲑⲏⲙ, from Egyptian sdm — to put makeup on; to apply medicine or salves to.

Ancestry of “إِثْمِد”, step by step

Step	Language	Word	Meaning
1	Coptic	ⲉⲥⲑⲏⲙ	—
2	Egyptian	sdm	to put makeup on; to apply medicine or salves to

إِثْمِد — Etymology, Origin & Word History | Etymology Explorer