Definition: A cubic meter per minute (m3/min) is a unit of volumetric flow rate indicating one cubic meter of substance passing a point in one minute. It measures medium to large volumes of fluid or gas flow.

History/origin: Derived from the cubic meter, the SI unit for volume. 'Per minute' specifies the rate of flow. This unit became important with the increasing need for accurate measurement and control of fluids and gasses in industrial and engineering applications.

Current use: M3/min is employed in ventilation systems, industrial processes involving moderate fluid or gas flow, and in measuring the output of pumps and compressors. It is also used to quantify the flow of air in HVAC systems and the flow of fluids in manufacturing processes.