disyllableyoudaoicibaDictYouDict[disyllable 词源字典]
"A word or metrical foot consisting of two syllables", Late 16th century: alteration (influenced by syllable) of French disyllabe, via Latin from Greek disullabos 'of two syllables', from di- 'two' + sullabē 'syllable'.[disyllable etymology, disyllable origin, 英语词源]