dew point

dew point
noun
the temperature at which the water vapor in the air becomes saturated and condensation begins
Hypernyms: ↑temperature, ↑saturation point

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noun
: the temperature at which a vapor begins to condense — used especially of water vapor in the atmosphere

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the temperature to which air must be cooled, at a given pressure and water-vapor content, for it to reach saturation; the temperature at which dew begins to form. Also called dew-point temperature. Cf. absolute humidity, mixing ratio, relative humidity, specific humidity.
[1825-35]

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dew point,
the temperature of the air at which dew begins to form: »

Measuring the temperature of the dew point is the most accurate method of determining relative humidity (Sears and Zemansky).

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n. the atmospheric temperature (varying according to pressure and humidity) below which water droplets begin to condense and dew can form

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noun [count]
technical : the temperature at which the moisture in the air forms visible drops of water : the temperature at which dew forms

It's 78° outside and the dew point is 63°.

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ˈdew point 7 [dew point dew points] noun singular (technical)
the temperature at which air can hold no more water. Below this temperature the water comes out of the air in the form of drops.

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Dew-point — n. (Meteor.) The temperature at which dew begins to form. It varies with the humidity and temperature of the atmosphere. [1913 Webster] …   The Collaborative International Dictionary of English

  • dew point — dew′ point n. mer the temperature to which air must be cooled, at a given pressure and water vapor content, for it to reach saturation; temperature at which dew begins to form • Etymology: 1825–35 …   From formal English to slang

  • dew point — n. the temperature at which a condensable component of a gas (as, esp., water vapor in the air) starts to condense into liquid …   English World dictionary

  • Dew point — The dew point is the temperature to which a given parcel of humid air must be cooled, at constant barometric pressure, for water vapor to condense into liquid water. The condensed water is called dew when it forms on a solid surface. The dew… …   Wikipedia

  • dew point — The temperature to which a given parcel of air must be cooled at constant pressure and constant water vapor content for saturation to occur. It is the temperature at which the saturation vapor pressure of the parcel is equal to the actual vapor… …   Aviation dictionary

  • dew point — rasos taškas statusas T sritis chemija apibrėžtis Temperatūra, kurioje susidaro pirmasis aušinamų garų skysčio lašas. atitikmenys: angl. condensation point; dew point; dew point temperature; temperature of dew point rus. точка конденсации; точка… …   Chemijos terminų aiškinamasis žodynas

  • dew point — rasos taškas statusas T sritis ekologija ir aplinkotyra apibrėžtis Temperatūra, kurioje santykinis oro drėgnis yra 100 % (prasideda vandens garų kondensacija). atitikmenys: angl. condensation point; dew point; dew point temperature; temperature… …   Ekologijos terminų aiškinamasis žodynas

  • dew point — rasos taškas statusas T sritis ekologija ir aplinkotyra apibrėžtis Temperatūra, kurioje tam tikrame slėgyje uždarame inde esantys garai atiduodami šilumą sudaro pirmąjį skysčio lašą. atitikmenys: angl. condensation point; dew point; dew point… …   Ekologijos terminų aiškinamasis žodynas

  • dew-point — rasos taškas statusas T sritis Standartizacija ir metrologija apibrėžtis Temperatūra, kurioje oro drėgnis yra 100 %. atitikmenys: angl. dew point; dew point temperature vok. Taupunkt, m; Taupunktstemperatur, f; Taupunkttemperatur, f rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • dew-point — rasos taškas statusas T sritis Standartizacija ir metrologija apibrėžtis Temperatūra, kurioje tam tikrame slėgyje uždarame inde esantys garai atiduodami šilumą suformuoja pirmąjį skysčio lašą. atitikmenys: angl. dew point; dew point temperature… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

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