diphthongization (the process by which a single vowel sound (monophthong) shifts to a two-vowel vocalization (diphthong))
çekim: tamlayan dyftongizacji
köken: Etymology tree English diphthongizationbor. Polish dyftongizacja Borrowed from English diphthongization. First attested in 1904. By surface analysis, dyftong + -izacja. Compare Silesian dyftōngizacyjŏ.