Yodization is any change resulting in a palatal semivowel /j/.
Yodization is any change resulting in a palatal semivowel /j/, i.e. ‘yod’. In Greek, the phenomenon affects particularly /i/ and /e/ in hiatus and is best known as synizesis: theós ‘god’ > [tʰe̯ós] > Lac. siós [sjós]. The semivowel /j/ may become a fricative through fortition: Anc. Gk. iatrós [iaːtrós] ‘doctor’ > [jaːtrós] > Mod. Gk. γιατρός [ʝaˈtros], Anc. Gk. heortḗ [heortέː] ‘feast’ > [e̯ortέː] > [jorˈti] > Mod. Gk. γιορτή [ʝorˈti].
There is little evidence of yodiza…