paint drier


Also found in: Dictionary, Thesaurus.

drier

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.