Pyrobitumen
[pahy-roh-bi-too-muh n, -tyoo-, -bich-oo-] /ˌpaɪ roʊ bɪˈtu mən, -ˈtyu-, -ˈbɪtʃ ʊ-/
noun
1.
any of the dark, solid hydrocarbons including peat, coal, and bituminous shale.
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