| assibilation | (n) the development of a consonant phoneme into a sibilant |
| sibilation | (n) pronunciation with a sibilant (hissing or whistling) sound, Syn. assibilation |
| Assibilation | n. Change of a non-sibilant letter to a sibilant, as of -tion to -shun, duke to ditch. [ 1913 Webster ] |