eq:Proc
A "proc" in EQ is an effect on a weapon that has the chance to randomly go off in combat.
Proc rates are independent of delay; a high delay weapon procs just as much as a lower delay weapon (generally speaking.) Some weapons do have 'procmods' that effect the proc rate in one direction or another; an example of this is Bloodfrenzy.
The base proc rate for a 305 dex level 65 person is 2 procs a minute; with 5 WA this increases to 3 PPM, with 5 WA and 100 CE this increases to 4 PPM.