だいいんすい 大母音推移
1. Great Vowel ShiftLinguistics
Wikipedia definition
2. Great Vowel ShiftThe Great Vowel Shift was a major change in the pronunciation of the English language that took place in England between 1350 and 1500. The Great Vowel Shift was first studied by Otto Jespersen (1860–1943), a Danish linguist and Anglicist, who coined the term. Because English spelling was becoming standardised in the 15th and 16th centuries, the Great Vowel Shift is responsible for many of the peculiarities of English spelling.
Read “Great Vowel Shift” on English Wikipedia
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Read “Great Vowel Shift” on DBpedia


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