What is silibisation?

Answer 1

I believe that the word you are looking for is syllabification. It means, breaking up a word into syllables. For example, the word inside can be broken up into two syllables, in side.

Answer 2

"Silibisation" is not a standard English term. It may be a typographical error of "sibilization," which refers to the articulation of sibilant sounds (like /s/ and /z/) in speech. If you meant something else, please provide more context.