[ dif-thawng-ahyz, -gahyz, -thong-, dip- ]
/ ˈdɪf θɔŋˌaɪz, -ˌgaɪz, -θɒŋ-, ˈdɪp- /
verb (used with object), diph·thong·ized, diph·thong·iz·ing.
to change into or pronounce as a diphthong.
verb (used without object), diph·thong·ized, diph·thong·iz·ing.
to become a diphthong.
Are There Any Words That Use “W” As A Vowel?“Cwm” (a steep-walled semicircular basin in a mountain, sometimes containing a lake; a cirque) and “crwth” (an ancient Celtic musical instrument), both from the Welsh, use w as a vowel – standing for the same sound that oo stands for in boom and booth. “Crwth” is also spelled “crowd.” However, in words like “low” and “bow,” one can make a good case that the letter w represents a vowel. Both of these words end …
Also especially British, diph·thong·ise.
Related formsdiph·thong·i·za·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for diphthongization
/ (ˈdɪfθɒŋˌaɪz, -ˌɡaɪz, ˈdɪp-) /
(often passive) to make (a simple vowel) into a diphthong
Derived Formsdiphthongization or diphthongisation, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012