- A time increment used for over time effects (Channeling, DoT, HoT, etc.):
- 1 tick is every time the spell's overtime effect happens. Many effects tick once every two seconds, but not all.
- The bronze drake Tick guarding the Caverns of Time together with Chronalis and Occulus.
In Not-WoW (aka Real-Life):Edit
Not specific to World of Warcraft, but sometimes used to describe time increments, a tick can have a few meanings: