Bi‐tu″mi‐nous (�), a. [L. bituminosus: cf. F. bitumineux.] Having the qualities of bitumen; compounded with bitumen; containing bitumen.
Near that bituminous lake where Sodom flamed.
Milton.
Bituminous coal, a kind of coal which yields, when heated, a considerable amount of volatile bituminous matter. It burns with a yellow smoky flame. — Bituminous limestone, a mineral of a brown or black color, emitting an unpleasant smell when rubbed. That of Dalmatia is so charged with bitumen that it may be cut like soap. — Bituminous shale, an argillaceous shale impregnated with bitumen, often accompanying coal.