a. [ L. bituminosus: cf. F. bitumineux. ] Having the qualities of bitumen; compounded with bitumen; containing bitumen. [ 1913 Webster ]
Near that bituminous lake where Sodom flamed. Milton. [ 1913 Webster ]
Bituminous coal,
Bituminous limestone,
Bituminous shale,
a. Consisting of, or containing, lime and bitumen. Lyell. [ 1913 Webster ]
a. Containing no bitumen; not bituminous. [ 1913 Webster ]