Association of Schools of Public Health
any of the constituents of a bitumen, as , that are insoluble in pentane, hexane, or naphthalene. Historical Examples According to others, asphaltum consists almost entirely of asphaltene. Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley
any of various dark-colored, solid, bituminous substances, native in various areas of the earth and composed mainly of hydrocarbon mixtures. a similar substance that is the by-product of petroleum-cracking operations. a mixture of such substances with gravel, crushed rock, or the like, used for paving. to cover or pave with asphalt. of, relating to, or […]
a natural, solid hydrocarbon having a melting point higher than that of asphalt. noun any of various naturally occurring hydrocarbons that resemble asphalt but have a higher melting point
n. 1721, noun of action from asperate (v.). Asperacioun “harshness” is attested from early 15c.