Bible Dictionaries
Diphthongalize

Webster's Dictionary

(v. t.) To make into a diphthong; to pronounce as a diphthong.

Bibliography Information
Webster, Noah. Entry for 'Diphthongalize'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​d/diphthongalize.html. 1828.