involved; intricate; complicated
The editor suggested that I break up some of my long, convoluted sentences into several shorter, simpler ones.
com (together)#volvere (to turn around, roll) (Latin)
Convolution theorem was very hard to understand!! volve is root which means to roll. con is prefix which means together. If you roll some thing completely (within it self) it becomes complicated!! and difficult to entangle it!