The Collaborative International Dictionary
Incondensable
Incondensable \In`con*den"sa*ble\, Incondensible \In`con*den"si*ble\, a. Not condensable; incapable of being made more dense or compact, or reduced to liquid form.
Wiktionary
incondensable
a. Not condensable; incapable of being made more dense or compact, or reduced to liquid form. alt. Not condensable; incapable of being made more dense or compact, or reduced to liquid form.