From un- + volatile. <span class="searchmatch">unvolatile</span> (comparative more <span class="searchmatch">unvolatile</span>, superlative most <span class="searchmatch">unvolatile</span>) Not volatile....
and flammable. The nature of AAS used in this study is unflammable and <span class="searchmatch">unvolatile</span>, which allowed for construction safety; 2011, Bo Ersson, Lars Rydén, Jan-Christer...
for this sense?) See also Thesaurus:ephemeral nonvolatile sal volatile <span class="searchmatch">unvolatile</span> volatilely volatile memory volatile organic compound volatility evaporating...