The Collaborative International Dictionary of English v.0.48:
nonvolatilizable \nonvolatilizable\ adj. not able to be volatilized. [Narrower terms: nonvolatile (vs. volatile)] WordNet 1.5]WordNet (r) 3.0 (2006):
nonvolatilizable adj 1: not volatilizing readily; "a nonvolatile acid" [syn: nonvolatile, nonvolatilizable, nonvolatilisable] [ant: volatile]