Copt (n.)youdaoicibaDictYouDict[Copt 词源字典]
"native monophosyte Christian of Egypt," 1610s, from Modern Latin Coptus, from Arabic quft, probably from Coptic gyptios, from Greek Agyptios "Egyptian." Arabic has no -p- and often substitutes -f- or -b- for it. Related: Coptic.[Copt etymology, Copt origin, 英语词源]