parchmentyoudaoicibaDictYouDict[parchment 词源字典]
parchment: [13] Under several layers of disguise lurks the geographical origin of parchment: the ancient town of Pergamum in western Turkey, whose inhabitants used the skin of sheep for writing on rather than papyrus. In Latin, such skin was known as charta Pergamīna ‘paper from Pergamum’, or simply pergamīna. This was later blended with Parthica pellis ‘Parthian leather’ to produce a Vulgar Latin *particamīnum, which passed into English via Old French parchemin (the ending was changed to -ment on the model of other English words, in the 15th century).

The formal distinction between parchment (made from sheepskin) and vellum (made from calfskin) has never been particularly watertight in English.
[parchment etymology, parchment origin, 英语词源]
parchment (n.)youdaoicibaDictYouDict
c. 1300, parchemin (c. 1200 as a surname), from Old French parchemin (11c., Old North French parcamin), from Late Latin pergamena "parchment," noun use of adjective (as in pergamena charta, Pliny), from Late Greek pergamenon "of Pergamon," from Pergamon "Pergamum" (modern Bergama), city in Mysia in Asia Minor where parchment supposedly first was adopted as a substitute for papyrus, 2c. B.C.E. Possibly influenced in Vulgar Latin by Latin parthica (pellis) "Parthian (leather)." Altered in Middle English by confusion with nouns in -ment and by influence of Medieval Latin collateral form pergamentum.