assibilation

as·sib·i·late

A0473900 (ə-sĭb′ə-lāt′)tr.v. as·sib·i·lat·ed, as·sib·i·lat·ing, as·sib·i·lates To pronounce with a hissing sound; make sibilant.

[ad- + sibilate.]

as·sib′i·la′tion n.

Thesaurus

Noun	1.	assibilation - the development of a consonant phoneme into a sibilantevolution, development - a process in which something passes by degrees to a different stage (especially a more advanced or mature stage); "the development of his ideas took many years"; "the evolution of Greek civilization"; "the slow development of her skill as a writer"
	2.	assibilation - pronunciation with a sibilant (hissing or whistling) soundsibilationpronunciation - the manner in which someone utters a word; "they are always correcting my pronunciation"