ADJECTIVE (5)

1. of or relating to syllables;
- Example: "syllabic accent"
- Example: "syllabic characters each represent a syllable"

2. consisting of or using a syllabary;
- Example: "eskimos of the eastern Arctic have a system of syllabic writing"

3. (of verse) having lines based on number of syllables rather than on rhythmical arrangement of stresses or quantities;

4. consisting of a syllable or syllables;

5. (of speech sounds) forming the nucleus of a syllable;
- Example: "the syllabic 'nl' in 'riddle'";

The Collaborative International Dictionary of English v.0.48:

Syllabic \Syl*lab"ic\, Syllabical \Syl*lab"ic*al\, a. [Gr. ?:
   cf. F. syllabique.]
   1. Of or pertaining to a syllable or syllables; as, syllabic
      accent.
      [1913 Webster]

   2. Consisting of a syllable or syllables; as, a syllabic
      augment. "The syllabic stage of writing." --Earle.
      [1913 Webster]

WordNet (r) 3.0 (2006):

syllabic
    adj 1: of or relating to syllables; "syllabic accent"; "syllabic
           characters each represent a syllable"
    2: consisting of or using a syllabary; "eskimos of the eastern
       Arctic have a system of syllabic writing"
    3: (of verse) having lines based on number of syllables rather
       than on rhythmical arrangement of stresses or quantities
       [ant: accentual, quantitative]
    4: consisting of a syllable or syllables [ant: nonsyllabic,
       unsyllabic]
    5: (of speech sounds) forming the nucleus of a syllable; "the
       syllabic 'nl' in 'riddle'" [ant: nonsyllabic]