Home › Words › P › preasphaltenepreasphaltenepreasphaltene means any compound similar to an asphaltene that is soluble in tetrahydrofuran.EtymologyFrom pre- + asphaltene.nounAny compound similar to an asphaltene that is soluble in tetrahydrofuran.Definitions & examples from Wiktionary (CC BY-SA 3.0).