Definition of "bituminous" [bi•tu•mi•nous]

• Like or containing bitumen. (adjective)
• Of or relating to bituminous coal. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "WHEREAS there exists a labor dispute between certain bituminous coal operators and associations and certain of their employees represented by the International Union, United Mine Workers of America, involving wages and terms and conditions of employment; and"
• "WHEREAS the Secretary of the Interior on May 22, 1946, pursuant to Executive Order No. 9728 issued by me on May 21, 1946,1 took possession of certain bituminous coal mines, including the mines of the Carter Coal Company located in McDowell County, West Virginia; and"
• "About 85 percent of the resources in place are classified as bituminous or sub-bituminous (hard) coal; the rest is lignite (soft brown) coal."