diph·​thong·​ize ˈdif-ˌthȯŋ-ˌīz How to pronounce diphthongize (audio)
diphthongized; diphthongizing

intransitive verb

of a simple vowel : to change into a diphthong

transitive verb

: to pronounce as a diphthong
diphthongization noun

Word History

First Known Use

1867, in the meaning defined at intransitive sense

Time Traveler
The first known use of diphthongize was in 1867

Dictionary Entries Near diphthongize

Cite this Entry

“Diphthongize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diphthongize. Accessed 20 May. 2024.

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