polysyllabilingual,a.nonce-wd.|pɒlɪˌsɪləbɪˈlɪŋgwəl| [f. as polysyllabe + lingual.] Relating to polysyllabic languages. 1824Crit.Res. in Philol. & Geog. 172 The practice of the Chinese, and other monosyllabic tongues, absolutely stultifies the polysyllabilingual theorist.