vowelyoudaoicibaDictYouDict[vowel 词源字典]
vowel: [14] A vowel is etymologically a ‘vocal’ sound – that is, one made by vibrating the vocal chords. The word comes via Old French vouel from Latin vōcālis. This was short for littera vōcālis ‘vocal letter, letter that sounds’, sonus vōcālis ‘vocal sound’, etc. Vōcālis (source of English vocal) was derived from vōx ‘voice’ (source of English voice).
=> voice[vowel etymology, vowel origin, 英语词源]
vowel (n.)youdaoicibaDictYouDict
c. 1300, from Old French voieul (Modern French voyelle), from Latin vocalis, in littera vocalis, literally "vocal letter," from vox (genitive vocis) "voice" (see voice (n.)). Vowel shift in reference to the pronunciation change between Middle and Modern English is attested from 1909. The Hawaiian word hooiaioia, meaning "certified," has the most consecutive vowels of any word in current human speech; the English record-holder is queueing.