off-gassing

off-gassing is the present participle and gerund of off-gas.

Meaning of off-gas

off-gas (third-person singular simple present off-gases or off-gasses, present participle off-gassing, simple past and past participle off-gassed)

To emit gases, especially noxious ones.
- 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.2004, Old-House Journal, page 86
Synonyms:

outgas

off-gassing (usually uncountable, plural off-gassings)

(usually) Emission of fumes, especially noxious.
- Not only are the formaldehyde off-gassings from treated cotton or treated synthetic fiber inhaled by breathing in close proximity to the sheets and pillowcases, but skin contact with such off-gassings can produce clothing dermatitis.2009, Thomas Hirsch, Air and Your Health: Clean Air Is Vital to Your Health, page 46
- It is 100 percent paint as there is virtually no evaporation and therefore no off-gassing.2011, Materiality and Interior Construction, page 253

What does off-gassing mean?: Off-gassing means emission of fumes, especially noxious.
What is off-gassing the present participle and gerund of?: Off-gassing is the present participle and gerund of off-gas.
What part of speech is off-gassing?: Off-gassing is a noun.
What is the plural of off-gassing?: The plural of off-gassing is off-gassings.

Adapted from Wiktionary: off-gassing (page history and authors); off-gas (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this entry: “off-gassing.” Word.ws, https://word.ws/off-gassing. Based on Wiktionary, CC BY-SA 4.0.