Definition: Gallons per minute (gal/min) is a unit of flow rate that represents the volume of fluid that passes a point in one minute, measured in gallons. This is a widely used measure in many industries for flow quantification.

History/origin: Like gal/s, the origin comes from the need to measure fluid flow rates in practical applications. The gallon is an established unit of volume, and the 'per minute' component allows for a convenient measurement over a manageable time interval.

Current use: It's used extensively in applications like measuring water flow in households, industrial processes, and in vehicle fuel consumption. It is a common unit for pumps, showers, and irrigation systems.