outgas

From out- +‎ gas.

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outgas (third-person singular simple present outgases or outgasses, present participle outgassing, simple past and past participle outgassed)

1. To release gaseous substances into the air, especially of a polymer material as it is aged or heated.

outgas (countable and uncountable, plural outgases or outgasses)

1. Gaseous substances released into the air, especially from a polymer material as it is aged or heated.

• gas out