Noun
English Wikipedia has an article on:specific humidityWikipedia
specific humidity (plural specific humidities)
The ratio of the mass of water vapour to mass of air.
At a given barometric pressure but independent of temperature, the dew point indicates the mole fraction of water vapor in the air, or, put differently, determines the specific humidity of the air. Source: Internet
As a result, absolute humidity in chemical engineering may refer to mass of water vapor per unit mass of dry air, also known as the mass mixing ratio (see "specific humidity" below), which is better suited for heat and mass balance calculations. Source: Internet