'Polysyllabic' definitions:

Definition of 'polysyllabic'

From: WordNet
adjective
Having or characterized by words of more than three syllables
adjective
(of words) long and ponderous; having many syllables; "sesquipedalian technical terms" [syn: polysyllabic, sesquipedalian]

Definition of 'Polysyllabic'

From: GCIDE
  • Polysyllabic \Pol`y*syl*lab"ic\, Polysyllabical \Pol`y*syl*lab"ic*al\, a. [Gr. ?; poly`s many + ? syllable: cf. F. polysyllabique.] Pertaining to a polysyllable; containing, or characterized by, polysyllables; consisting of more than three syllables. [1913 Webster]