Off-gas

noun, verb

noun, verb ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Gas produced as a side effect of a chemical reaction, sometimes hazardous. countable, uncountable
Verb
  1. 1
    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."

Synonyms

All synonyms
outgas

Example

More examples

"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."

Etymology

From off- + gas.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.