In
North American English,
:/æ/ raising is a commonly found feature, where the phoneme is raised before certain consonants. The environments that this feature occurs in vary across dialects. In
i-mutation, a front vowel is raised before or , which is assimilation. In the
Attic dialect of
Ancient Greek and in
Koine Greek, close-mid were raised to . The change occurred in all cases and was not triggered by a nearby front consonant or vowel. Later, Ancient Greek was raised to become Koine Greek and then . For more information, see In
Czech, the
alveolar trill was raised before to become the
raised alveolar trill , spelled as in . That is a form of
palatalization, and it also occurred in
Polish in which it became a simple
sibilant fricative (spelled or ) around the 16th century. The pronunciation in
Polish is considered to be nonstandard and is used only by some older speakers. == References ==