diphthongize

verb
diph·thong·ize | \ ˈdif-ˌthȯŋ-ˌīz , ˈdip- \
diphthongized; diphthongizing

Definition of diphthongize 

intransitive verb

of a simple vowel : to change into a diphthong

transitive verb

: to pronounce as a diphthong

Other words from diphthongize

diphthongization \(ˌ)dif-ˌthȯŋ-ə-ˈzā-shən, (ˌ)dip- \ noun

First Known Use of diphthongize

1867, in the meaning defined at intransitive sense

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The first known use of diphthongize was in 1867

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