off-gas

noun
\ ˈȯf-ˌgas How to pronounce off-gas (audio) \
plural off-gases also off-gasses

Definition of off-gas

 (Entry 1 of 2)

: a gas that is produced as a by-product of an industrial process or that is given off by a manufactured object or material Refinery off-gases from fluid catalytic cracking could be a source of ethylene.Predicasts Technology Update

off-gas

verb
off-gassed; off-gassing

Definition of off-gas (Entry 2 of 2)

transitive + intransitive

: to give off a typically harmful gas In addition, OSHA intends to amend the hazard communication provisions of the standard to require hazard warning labels for solid materials capable of off-gassing formaldehyde at levels between 0.1 ppm and 0.5 ppm …Chemical & Engineering News … there have been environmental concerns about the phenol formaldehyde binders used in most engineered-wood products, which can off-gas.— Max Alexander

First Known Use of off-gas

Noun

1955, in the meaning defined above

Verb

1974, in the meaning defined above

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Time Traveler for off-gas

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The first known use of off-gas was in 1955

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Cite this Entry

“Off-gas.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/off-gas. Accessed 11 Aug. 2020.

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