Hit Points

Also known as health points (or HP), damage points, heart points, or just health (among other synonyms), is a finite value used to determine how much damage (usually in terms of physical injury) a character can withstand. When a character is attacked, or is hurt from a hazard or fall, the total damage dealt (which is also represented by a point value) is subtracted from their current HP. Once their HP reaches 0, the character will be unable to fight. In role-playing games, health is often abbreviated by two letter initialisms such as HP.