trisyllable

[ trahy-sil-uh-buh l, trahy-sil-, tri- ]
/ ˈtraɪˌsɪl ə bəl, traɪˈsɪl-, trɪ- /
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noun

a word of three syllables, as pendulum.

Origin of trisyllable

1580–90; tri- + syllable, modeled on Greek trisýllabos having three syllables
Related formstri·syl·lab·ic [trahy-si-lab-ik, tris-i-] /ˌtraɪ sɪˈlæb ɪk, ˌtrɪs ɪ-/, tri·syl·lab·i·cal, adjectivetri·syl·lab·i·cal·ly, adverbtri·syl·lab·ism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trisyllabic

British Dictionary definitions for trisyllabic

trisyllable

/ (traɪˈsɪləbəl) /

noun

a word of three syllables
Derived Formstrisyllabic (ˌtraɪsɪˈlæbɪk), adjectivetrisyllabically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012