Dictionary only supports character based languages, not ideograph based languages.
British Dictionary definitions for ideograph
ideogram
/ˈɪdɪəʊˌɡræm/
noun
1.
a sign or symbol, used in such writing systems as those of China or Japan, that directly represents a concept, idea, or thing rather than a word or set of words for it
2.
any graphic sign or symbol, such as %, @, &, etc
Word Origin and History for ideograph
n.
late 1830s, from comb. form of Greek idea (see idea) + -graph "instrument for recording; something written." Related: Ideographic (1822); ideographical.