monophthongize


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monophthongize

(ˈmɒnəfθɒŋˌɡaɪz) or

monophthongise

vb
(Phonetics & Phonology) to turn (a vowel sound) into a monophthong
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Laude is a latinate form (the diphthong/au/did not monophthongize to/o/) and move/core may lead to a fruitful discussion on the proposed origins of diphthongs in stressed, open syllables (which are summarized concisely in Maiden's A Linguistic History of Italian, London: Longman, 1995: 35-40).