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- Containing bitumen.
- Pertaining to bituminous coal. AGI
- Having the odor of bitumen; often applied to minerals.
- Yielding volatile bituminous matter on heating (for example, bituminous coal). AGI
- Containing much organic, or at least carbonaceous, matter, mostly in the form of the tarry hydrocarbons, which are usually described as bitumen.
Source: Dictionary of Mining, Mineral, and Related Terms