"Pergamenum" is a Latin word that refers to a type of parchment made from animal skins. The spelling of this word can be explained using the International Phonetic Alphabet (IPA). The first syllable "per" is pronounced as /pər/, with a short "e" sound. The second syllable "ga" is pronounced as /ˈɡæ/, with a hard "g" sound and a short "a" sound. The third syllable "me" is pronounced as /mɛ/, with a short "e" sound. The final syllable "num" is pronounced as /nʌm/, with a short "u" sound.