Where does “Mahometism” come from?
Mahometism (English) comes from English Mahomet, from Middle English Macomet, from Latin Machometus, from Jewish Aramaic مَحُمَّدْ, from Arabic مُحَمَّد, from Classical Persian جَان, from Middle Persian 𐫃𐫏𐫀𐫗, from Proto-Iranian *wyaHnáH.
Ancestry of “Mahometism”, step by step