The term "-3 (Negative)" refers to a number that is three units less than zero. In mathematics, negative numbers are used to represent values below zero, such as temperatures in winter or debts. For example, if the temperature is -3 degrees Celsius, it means it is three degrees colder than freezing point. Negative numbers like -3 can also be found in various real-life situations, such as when calculating scores in games. If a player has a score of -3, it indicates they are three points below the starting score. Understanding negative numbers is essential for grasping basic math concepts and everyday situations.