[AIVC, Air infiltration and ventilation glossary, 1992]:the rate and direction of air movement. (Important when considering cooling effects and comfort criteria). [EN 12792:2003, 40]:rate of motion of air in a given direction measured as distance per unit time.

[EN 12792:2003, 315]:arithmetical average value of velocity conventionally derived from the various locally measured mean air velocities within the occupied zone

[EN 13141-4:2021, 3.6]: [EN 13141-7:2021, 3.6]:declared maximum air volume flow of the unit.