Dot may refer to any of the following:
1. A dot is a single pixel on a matrix display.
2. Single small dot on a dot matrix printer print out.
4. In a RPG or MMORPG, a DoT is short for Damage Over Time, a spell or effect that damages a player or NPC periodically, for a set period of time. For example, a poisoned player may suffer 30 damage every second for ten seconds. In this case, the poison effect would be considered "a DoT."