noun
absolute humidity
Technical term in physics and meteorology; refers to the mass of water vapor per unit volume of air, usually expressed in g/m³.
絶対湿度が高いと、空気中に多くの水蒸気が含まれている。
When the absolute humidity is high, the air contains a lot of water vapor.
Relative humidity is the ratio of current water vapor to the maximum possible at that temperature, expressed as a percentage. Absolute humidity is the actual mass of water vapor per unit volume.
Compound of 絶対 (absolute) and 湿度 (humidity), a direct calque of the English term 'absolute humidity'.