The Egyptian Book of the dead by P. Le Page Renouf and Edouard Naville

7. _Grind_ ⁂⁂⁂, the Coptic from of which is ⲥⲓⲕⲓ. From the

notion of ‘reducing to powder,’ that of the frequent word ⁂⁂⁂ ‘wearing away,’ ‘decay,’ is derived.