Akanye

Akanye (Russian: аканье [ˈakənʲjɪ]) or akanje (Belarusian: аканне [ˈakanʲːe]; lit.'a-ing') is a sound change in Slavic languages in which the phonemes /o/ or /e/ are realized as more or less close to [a]. It is a case of vowel reduction.

The most familiar example is probably Russian akanye (pronounced but not systematically represented orthographically in the standard language). Akanye also occurs in: