trisyllable
/ˈtraɪˌsɪləbəl/
noun
- A word or metrical foot consisting of three syllables.
- The teacher asked the class to find a trisyllable in the first line of the poem.
- In poetry, a trisyllable can create a different rhythm than a two-syllable word.
- The word 'banana' is a trisyllable because it has three syllables.