Polysyllabicity

1943, John de Francis, "The Alphabetization of Chinese," Journal of the American Oriental Society, vol. 63, no. 4 (Oct/Dec), p. 235, The drift of the Chinese language toward greater polysyllabicity is seen even more clearly in the fact that not more than 15 percent of the Chinese equivalents of foreign technical terms consist of only one syllable.

"Polysyllabicity" and "utterableness" each has the word-property it designates.