off-gas (plural off-gases)
- (manufacturing) Gas produced as a side effect of a chemical reaction, sometimes hazardous.
off-gas (third-person singular simple present off-gasses, present participle off-gassing, simple past and past participle off-gassed)
- (of a solid or liquid) To emit gases, especially noxious ones.
- 2004, Old-House Journal, page 86
- Since solvent-based paints can off-gas for a long time as they dry, when trapped in a tightly sealed building they can contribute to an unhealthy cocktail of chemicals in the air.