dew point (redirected from Frost point)

dew point

n. Abbr. DP

The temperature at which air becomes saturated and produces dew.

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dew point

n

(Earth Sciences / Physical Geography) the temperature at which water vapour in the air becomes saturated and water droplets begin to form

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dew point

The temperature at which the water vapor contained in a volume of air at a given atmospheric pressure reaches saturation and condenses to form dew. The dew point varies depending on how much water vapor the air contains, with humid air having a higher dew point than dry air. When large droplets of condensation form, they are deposited onto surfaces as dew. When smaller droplets form, they remain suspended in the air as mist or fog. If the dew point is below the freezing temperature of water (0°C), the water vapor turns directly into frost by sublimation.

Thesaurus

Noun

1.

dew point - the temperature at which the water vapor in the air becomes saturated and condensation begins temperature - the degree of hotness or coldness of a body or environment (corresponding to its molecular activity) saturation point - (chemistry) the stage at which a substance will receive no more of another substance in solution or in a vapor