paint drier

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1. An additive which is mixed with paints and varnishes to speed their drying by absorbing oxygen from the air.
3. A device containing a desiccant, placed in a refrigerant circuit; used to collect and hold within the desiccant all water in the system in excess of the amount which can be tolerated in the circulating refrigerant.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.