outgas

[out-gas, out-gas]Chemistry
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