[hyoo-mid-i-tee or, often, yoo-] 
| 1. | humid condition; moistness; dampness. |
| 2. | relative humidity. |
| 3. | an uncomfortably high amount of relative humidity: It's not the heat, it's the humidity that tires me out. |
| the amount of water vapor in the air, expressed as a percentage of the maximum amount that the air could hold at the given temperature; the ratio of the actual water vapor pressure to the saturation vapor pressure. Abbreviation: RH, rh |
| hu·mid·i·ty (hyōō-mĭd'ĭ-tē) n.
[Middle English humidite, from Old French, from Medieval Latin hūmiditās, from Latin hūmidus, humid; see humid.] |
The amount of water vapor in the air. Humidity is measured in two ways: (1) Absolute humidity is the percentage of water vapor actually present in the air. (2) Relative humidity is the absolute humidity divided by the amount of water that could be present in the air. Relative humidity indicates the degree of comfort or discomfort one feels from the humidity, because it indicates the amount of perspiration that can evaporate from the skin.
humidity hu·mid·i·ty (hy&oomacr;-mĭd'ĭ-tē)
n.
Dampness, especially of the air.
relative humidity n.
The ratio of the amount of water vapor in the air at a specific temperature to the maximum amount that the air could hold at that temperature, expressed as a percentage.
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