Polysyllable. Words with two or three syllables are called disyllables and trisyllables, respectively, though 'polysyllable' can be a word with two syllables or more. A word with multiple syllables...
There are 3 syllables in the word syllable (syll-a-ble).(The entire L sound is part of the first syllable, as SILL-uh-buhl.)The word 'syllable' has three syllables. Syl-la-ble.