adjective

1. of a syllable or syllables
2. forming a syllable or the nucleus of a syllable; specif.,
   1. being the most prominent sound in a phonemic syllable: said of a vowel
   2. constituting the more heavily stressed part of a diphthong, as the sound of o in boy
   3. standing by itself as the nucleus of a syllable without an accompanying vowel: said of a consonant, as the sound of l in tattle (tatʹ'l)
3. designating or of a form of verse whose structure is based on the number of syllables in a line rather than on rhythm, stress, or quantity
4. pronounced with the syllables distinct

Etymology: LL syllabicus < Gr syllabikos

noun

1. a syllabic sound
2. syllabic verse