noun \hyü-ˈmi-də-tē, yü-\

: moisture in the air : the amount of moisture in the air

plural hu·mid·i·ties

Full Definition of HUMIDITY

:  a moderate degree of wetness especially of the atmosphere — compare relative humidity

Examples of HUMIDITY

  1. the humidity of the region
  2. It's not the heat that will get you—it's the humidity.
  3. The temperature is 67 degrees with humidity at 75 percent.
  4. an area of low humidity

First Known Use of HUMIDITY

15th century

Other Climate/Meteorology Terms

monsoon, occlusion, ozone, rime, squall, zephyr


noun \hyü-ˈmid-ət-ē, yü-\   (Medical Dictionary)
plural hu·mid·i·ties

Medical Definition of HUMIDITY

: a moderate degree of wetness especially of the atmosphere—see absolute humidity, relative humidity


noun    (Concise Encyclopedia)

Amount of water vapour in the air. One of the most variable characteristics of the atmosphere, humidity is an important factor in climate and weather: it regulates air temperature by absorbing thermal radiation both from the Sun and the Earth; it is directly proportional to the latent energy available for the generation of storms; and it is the ultimate source of all forms of condensation and precipitation. Humidity varies because the water-holding capacity of air is determined by temperature. When a volume of air at a given temperature holds the maximum amount of water vapour possible, the air is said to be saturated. Relative humidity is the water-vapour content of the air relative to its content at saturation. Saturated air has a relative humidity of 100%; near the Earth the relative humidity rarely falls below 30%.


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