Definition of 'Proc' and 'Proccing' in Programming

These terms are usually used within a gaming context

Young man playing computer game.
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Proc means "programmed random occurrence." It's a computer gamer term, rhyming with "dock" and used as both a noun and a verb, that's used to describe whenever a random gaming item activates, or a random gaming event occurs.

Particularly common for massively multiplayer online games, procs are random events where special armor or weapons provide the user with temporary extra powers, or whenever the opposing character suddenly becomes more powerful in some way.

Proc & Proccing Examples

Here are some examples of gaming procs:

  • A special spell cast suddenly becomes available to the player
  • A sudden armor bonus will activate and last for 10 seconds
  • The player will temporarily receive more health points, allowing him/her to fight a monster longer
  • The opposing character will suddenly gain extra strength to crush the players in front of it

Here are some ways you might see the word proc used:

"Whenever my trinket procs, I get extra dodge for 20 seconds"
"My rifle speed-up never procs enough for my tastes."
"My ring usually procs once every two minutes"
"Don't let his lightning charge proc, or else we are all dead"‚Äč