Polysyllabic
[,pɒlɪsɪ'læbɪk] or [,pɑləsɪ'læbɪk]
Definition
(adj.) (of words) long and ponderous; having many syllables; 'sesquipedalian technical terms' .
(adj.) having or characterized by words of more than three syllables .
Checked by Aron--From WordNet
Definition
(a.) Alt. of Polysyllabical
Typist: Meg