Dictionary
dew' point"
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 tem"perature. Cf.
absolute humidity, mixing ratio, relative humidity, specific humidity.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.