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Definition of: humidity
(hy·mid′ə·tē) noun
1. Moisture; dampness.
2. Meteorol. The percentage of water vapor in the air to the total amount possible at the same temperature (relative humidity). The actual amount of water vapor per unit of volume is known as absolute humidity. Also hu′mid·ness. [<OF humidité <L humiditas <humidus humid]
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