Examples from the Web for trisyllabic
There occur besides, but seldom, trisyllabic rhymes, such as those in ll.A History of English Versification|Jakob Schipper
That the dissyllabic measures are, in English, commoner than the trisyllabic.
The number of trisyllabic measures is, of necessity, limited to three.
If it be on the second, then the word is trisyllabic: (tavernez).
Trisyllabic rhythm either dactylic7 or anapaestic8 as may be on general principles preferred.Minor Poets of the Caroline Period, Vol III|John Cleveland