Hot may refer to any of the following:
2. With electronics and power, the hot wire is the wire carrying the power and is often the black wire when you have a black and white wire.
3. With cabling that does not have power (e.g., data cable), the hot cable or hot wire is a cable with a signal.
4. When referring to an image or picture, hot is any area that is overexposed.
5. In an RPG or MMORPG, a HoT is short for Heal Over Time and is a spell or ability that causes a friendly player to be healed over a short period. For example, a player may cast a heal for 1,000 health points, but it heals for 250 health each second for four seconds.