a. [f. L. bitūmin- + -(I)FEROUS.] Yielding bitumen.

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1799.  Kirwan, Geol. Ess., xiv. 259. Bituminiferous and Cupriferous Sand.

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1857.  Page, Adv. Text-bk. Geol., xiv. (1876), 251. Caking or coking coal, a highly bituminiferous sort.

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