Meaning of monophthongize

mon•oph•thong•ize

Pronunciation: (mon'uf-thông-īz", -gīz", -thong-), [key]
— v., -ized, -iz•ing.
—v.t.
  1. to change into or pronounce as a monophthong.
—v.i.
  1. to become a monophthong.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.