Search Result for "assibilate": 
Wordnet 3.0

VERB (2)

1. insert a sibilant sound before or after (another sound);

2. change into a sibilant;
- Example: "In the syllable /si/, the /s/ sibilates in Japanese"



The Collaborative International Dictionary of English v.0.48:

Assibilate \As*sib"i*late\, v. t. [L. assibilatus, p. p. of
   assibilare to hiss out; ad + sibilare to hiss.]
   To make sibilant; to change to a sibilant. --J. Peile.
   [1913 Webster]


WordNet (r) 3.0 (2006):

assibilate
    v 1: insert a sibilant sound before or after (another sound)
    2: change into a sibilant; "In the syllable /si/, the /s/
       sibilates in Japanese"