syllabary
Concise Oxford English Dictionary © 2008 Oxford University Press:
syllabary /ˈsɪləb(ə)ri/
▶noun (pl. syllabaries) a set of written characters representing syllables, serving the purpose of an alphabet.
– origin C19: from mod. L. syllabarium, from L. syllaba ‘syllable’.
'syllabary' also found in these Oxford entries:

