diphthongize

Definition of Diphthongize in English :

1. diphthongise, diphthongize

change from a simple vowel to a diphthong

Example Sentences:
'This vowel diphthongized in Germanic'

WordNet Lexical Database for English. Princeton University. 2010.

Diphthongize

verb

(often passive)

to make (a simple vowel) into a diphthong

verb transitiveWord forms: ˈdiphthongˌized or ˈdiphthongˌizing

1.

to pronounce (a simple vowel) as a diphthong

verb intransitive

2.

to become a diphthong

tr. & intr.v. diph·thong·ized, diph·thong·iz·ing, diph·thong·iz·es

To pronounce as or become a diphthong.