The words trilogic and trilogical exist, but they are very rare and unidiomatic, and you would do well to avoid them. Offhand I can't think of any circumstance where you could not use the noun trilogy rather than a phrase such as trilogic work.
lord of the rings trilogy was truly amazing. It is truly out of this world.
The plural of trilogy is trilogies.
A trilogy.
There are three movies in a trilogy.
it is the prequel of the trilogy
Trilogy means 3, so every horror movie trilogy will have three movies in it. Therefor one trilogy cannot be larger than another.
Viking Trilogy was created in 1957.
The Jade Trilogy was created in 1988.
Amber Trilogy was created in 1992.
Trilogy Systems was created in 1980.
El Trilogy was created in 1999.
The ISBN of Conquerors' Trilogy is 0553575627.