[bahy-too-muh-nuhs, -tyoo-, bi-]
resembling or containing bitumen: bituminous shale.

1610–20; < Latin bitūminōsus, equivalent to bitūmin- (stem of bitūmen) bitumen + -ōsus -ous

nonbituminous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
bitumen (ˈbɪtjʊmɪn)
1.  any of various viscous or solid impure mixtures of hydrocarbons that occur naturally in asphalt, tar, mineral waxes, etc: used as a road surfacing and roofing material
2.  the constituents of coal that can be extracted by an organic solvent
3.  any liquid suitable for coating aggregates
4.  the bitumen
 a.  informal (Austral), (NZ) any road with a bitumen surface
 b.  informal (Austral) (capital) the road in the Northern Territory between Darwin and Alice Springs
5.  a transparent brown pigment or glaze made from asphalt
[C15: from Latin bitūmen, perhaps of Celtic origin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1610s, from Fr. bitumineux, from L. bituminosus, from bitumen (see bitumen).
"The Plain, wherein a black bituminous gurge Boiles out from under ground, the mouth of Hell." ["Paradise Lost," XII.41]
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences for Bituminous
This also drives off a considerable amount of the contained water of the bituminous coal.
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