A "setpoint" refers to a specific value or range that a system aims to maintain. In biological contexts, such as human body temperature or weight, the setpoint is the ideal level that the body tries to achieve and regulate. For example, the body typically maintains a temperature around 98.6°F (37°C) as its setpoint. In engineering, a setpoint is the desired value for a controlled variable in a system, such as the temperature in a thermostat or the pressure in a boiler. The system continuously adjusts its operations to reach and maintain this setpoint, ensuring optimal performance and stability.