Theory:

Syllabification refers to the process of division of words into smaller parts, known as syllables - based on the sounds they produce. The method involves splitting of words into units of sounds or sounds of vowels. A syllable is an unit of pronunciation having one vowel sound.
Example:
1. Run - "U" is the vowel that produces a syllable. Therefore, the word had one syllable.
2. Acting - Act-ing: "A" and "I" are the vowels that produces two different sounds. Therefore there are two syllables in this word.
3. Australia - Au-stra-lia: has "Au" producing a sound, "stra" producing a sound, "Lia" producing a sound; therefore there are three syllables in this word.
Important!
In simple words, syllabifying is the process of dividing the words according to the vowel sounds.
There are six types of syllabification:
 
Syllabification.JPG
 
Note: The most common types are monosyllabic, disyllabic and polysyllabic words.
 
Let us syllabify a few words to understand the syllabification process better:
Process of syllabification:
  
1. Read the word
2. Identify the vowels.
3. Break the words according to the vowel sounds.
No.
Word
Split into
No. of syllables
Syllabification type
1EnglishEng-lish
\(2\)
Disyllabic
2SchoolSchool
\(1\)
Monosyllabic
3FundamentallyFun-da-men-tal-ly
\(5\)
Pentasyllabic
4ConcernedCon-cerned
\(2\)
Disyllabic
5FertilizerFer-ti-li-zer
\(4\)
Terasyllabic
6NauseatedNau-se-at-ed
\(4\)
Terasyllabic
7GiddyGid-dy 
\(2\)
Disyllabic
8ExhaustedEx-haust-ed
\(3\)
Trisyllabic
9GrandfatherGrand-fa-ther
\(3\)
Trisyllabic
10ScorchingScorch-ing
\(2\)
Disyllabic
11InevitableIn-ev-i-ta-ble
\(5\)
Pentasyllabic
12MagnificentMag-nif-i-cent
\(4\)
Terasyllabic
13CommunicationCom-mu-ni-ca-tion
\(5\)
Pentasyllabic
14ChecklistCheck-list
\(2\)
Disyllabic
15IncidentallyIn-ci-den-tal-ly
\(5\)
Pentasyllabic