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outgas

[out-gas, out-gas]Chemistry
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verb (used with object), out·gassed, out·gas·sing.
  1. to remove (adsorbed or occluded gases), usually by heat or reduced pressure.
verb (used without object), out·gassed, out·gas·sing.
  1. to lose gas.

Origin of outgas

First recorded in 1920–25; out- + gas
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for outgas

outgas

verb -gases, -gasses, -gassing or -gassed
  1. to undergo or cause to undergo the removal of adsorbed or absorbed gas from solids, often by heating in free space
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012