polysyllable

noun

1. A word with more than two syllables. Sometimes used in a more restricted sense.

   “For instance, words can differ in length, and we can rhyme a monosyllable with a polysyllable, like tracks with haversacks.”

   “In the Phyengan dialect, wuy developed into wi but at the end of a polysyllable it often dropped the -y to become wu (ibid): Tang-nakwu = Tang-nakwi 'donkey'”

   “The third syllable of provided is ed, and therefore the verb is not a polysyllable.”