1. having been changed into or pronounced as a diphthong
Usage: linguistics

1. past tense and past participle of diphthongize
Usage: linguistics

Examples

• The vowel sound became diphthongized over several centuries of language change.
• In some dialects, the long ‘a’ sound has been diphthongized.
• The linguist studied how certain vowels were diphthongized in Middle English.
• Regional accents often feature diphthongized vowels that were once pure vowels.
• The pronunciation guide showed which vowels had been diphthongized in the local dialect.
• Historical records reveal when specific sounds became diphthongized in the language.