trisyllable       
noun [ C ]  language specialized uk/traɪˈsɪl.ə.bəl/ us/traɪˈsɪl.ə.bəl/
 三音节词
a word with three syllables
  There is some debate about whether the name "Coleridge" is pronounced as a disyllable or a trisyllable. 关于把“Coleridge”这个名字读作一个双音节词还是三音节词,还有一些争议。 
 - More examples
 - In our analysis, the definitions of di- and trisyllables number the syllables from the right.
 - The bird's call is a liquid trisyllable "whe-whee-ooo", rising from first to second and then falling again.
 - A disyllable consists of two syllables, and a trisyllable of three.
 - The noun is pronounced as a trisyllable with the stress on the last syllable.