proc
v.v. to trigger a specific event or effect in a video game. You use this when a special ability or item starts working because of a random chance.
v. to trigger a programmed event or special effect, typically in a gaming context. Often refers to the activation of a procedure or a 'programmed random occurrence' when specific conditions are met.
My health potion will proc if my life gets too low.
The player equipped the enchanted sword because it has a ten percent chance to proc a lightning strike on every hit.
Experienced players often calculate their critical hit chance to ensure that powerful abilities proc frequently enough to maintain high damage output during boss encounters.
The video game sense is from the abbreviation of procedure. The folk etymology from programmed random occurrence is a backronym.
Used both as a transitive verb ('to proc an effect') and an intransitive verb ('the ability procs'). Common in gaming and software development registers.