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| bi·tu·men [ bi tmən, bi tymən, bī tmən, bī tymən ] |
noun |
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| Definition: |
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road-surfacing material: a sticky mixture of hydrocarbons found in substances such as asphalt and tar. Source: petroleum.
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| [15th century. < Latin, "asphalt"] |
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 bi·tu·mi·noid adjective |
 bi·tu·mi·nous adjective |
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