dew-point composition

dew-point composition

[′dü ‚pȯint ‚käm·pə′zish·ən]
(chemical engineering)
The water vapor-air composition at saturation, that is, at the temperature at which water exerts a vapor pressure equal to the partial pressure of water vapor in the air-water mixture.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.