The ambient temperature measured with a wet-bulb thermometer.

The lowest temperature which a water wetted body will attain when exposed to an air current. This is the temperature of adiabatic saturation, and can be used to measure humidity.

The temperature an air parcel would have if cooled adiabatically to saturation at constant pressure by evaporation of water into it.

Temperature that is measured by a wet-bulb thermometer, which has a wet cloth sleeve that covers its bulb. Wet-bulb temperature and dry-bulb temperature are used to compute relative humidity.

A wet bulb temperature of air is used to evaluate the humidity in the air. It is obtained with a wet thermometer bulb to record the evaporation rate with and airstream passing over the bulb to help in evaporation.

Temperature read on a thermometer whose bulb is covered by a film of water or ice and which is exposed to the air in a position sheltered from direct solar radiation.

is used in psychrometry and is the temperature recorded by a thermometer whose bulb has been covered with a wetted wick and whirled on a sling psychrometer. Taken together with the dry-bulb temperature, it permits determination of the relative humidity of the atmosphere.

The lowest temperature that can be obtained on a wet-bulb thermometer in any given sample of air. Obtained by evaporation of water (or ice) from the muslin wick. Used in computing dew point and relative humidity.

The temperature of a gas stream taken with a wetted thermometer. It is approximately equal to the adiabatic saturation temperature of the gas.

Technically, the temperature registered by the wet bulb thermometer of a Psychrometer. It is the lowest temperature to which air can be cooled by evaporating water into it at a constant atmospheric pressure.

Wet-bulb temperature is a factor in the determination of relative humidity. Wet-bulb temperature is measured using a thermometer that has its bulb wrapped in cloth—called a sock—that is kept wet with water via wicking action. Such an instrument is called, not surprisingly, a wet-bulb thermometer.