[ as-fawl-teen or, esp. British, -fal- ]
/ æsˈfɔl tin or, esp. British, -ˈfæl- /
any of the constituents of a bitumen, as asphalt, that are insoluble in pentane, hexane, or naphthalene.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for asphaltene
According to others, asphaltum consists almost entirely of asphaltene.