What is "iotized"

1 (context linguistics English) Of a spoken vowel sound, preceded with the ''i'' sound. 2 (context linguistics Slavic paleography English) Denoting a letter representing an iotized vowel, like Russian я, ю, ё, е or an early Cyrillic letter originating as a ligature with the Greek iota: (lang mul sc=Cyrs ꙗ, ѥ, ю, ѩ, ѭ). v

(en-past of: iotize)