Trisyllabic examples are 'colloquy', 'ministry', 'perjury'.
"Society for Pure English Tract 4" by John Sargeaunt
On this principle, the trisyllabic Tin-tun-ling must have been without much honour in his own country.
"Lost Leaders" by Andrew Lang
But beyond these there are in the English language measures of three syllables, or trisyllabic measures.
"A Handbook of the English Language" by Robert Gordon Latham
In only two lines trisyllabic feet occur; in only two, final pauses.
"Francis Beaumont: Dramatist" by Charles Mills Gayley
Dissyllabic and trisyllabic 503 640.
"The English Language" by Robert Gordon Latham