polysyllable

[ pol-ee-sil-uh-buh l, pol-ee-sil- ]

/ ˈpɒl iˌsɪl ə bəl, ˌpɒl iˈsɪl- /

a polysyllabic word.

Origin of polysyllable

First recorded in 1560–70; poly- + syllable

(crossing herself with superstitious awe at the polysyllable).

The Cloister and the Hearth |Charles Reade
Polysyllable, pol′i-sil-a-bl, n. a word of many or of more than three syllables.

Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) |Various
Yes, it is a polysyllable'—as, indeed, he had added an unnecessary syllable.

The Young Step-Mother |Charlotte M. Yonge

polysyllable

/ (ˈpɒlɪˌsɪləbəl) /

a word consisting of more than two syllables