The Collaborative International Dictionary of English v.0.48:

Syllabary \Syl"la*ba*ry\, n.
   A table of syllables; more especially, a table of the
   indivisible syllabic symbols used in certain languages, as
   the Japanese and Cherokee, instead of letters. --S. W.
   Williams.
   [1913 Webster]

WordNet (r) 3.0 (2006):

syllabary
    n 1: a writing system whose characters represent syllables [syn:
         syllabary, syllabic script]

Moby Thesaurus II by Grady Ward, 1.0:

61 Moby Thesaurus words for "syllabary":
   IPA, ITA, Initial Teaching Alphabet,
   International Phonetic Alphabet, alphabet, alphabetics, art,
   blueprint, charactering, characterization, chart, choreography,
   conventional representation, dance notation, delineation,
   demonstration, depiction, depictment, diagram, drama, drawing,
   exemplification, figuration, futhark, graphemics, hieroglyphic,
   iconography, ideogram, illustration, imagery, imaging, letter,
   letters, limning, logogram, logograph, map, musical notation,
   notation, paleography, pictogram, picturization, plan, portraiture,
   portrayal, prefigurement, presentment, printing, projection,
   realization, rendering, rendition, representation, runic alphabet,
   schema, score, script, symbol, tablature, writing,
   writing system