verb (used with object), mon·oph·thong·ized, mon·oph·thong·iz·ing.
- to change into or pronounce as a monophthong.
verb (used without object), mon·oph·thong·ized, mon·oph·thong·iz·ing.
- to become a monophthong.
verb (used with object), mon·oph·thong·ized, mon·oph·thong·iz·ing.
verb (used without object), mon·oph·thong·ized, mon·oph·thong·iz·ing.