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oil shale

noun, Geology
1.
a black or dark-brown shale or siltstone rich in bitumens, from which shale oil is obtained by destructive distillation.
Origin of oil shale
1870-1875
1870-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for oil shale
Historical Examples
  • Also it is distilled in Scotland from oil shale, from which paraffin oil and wax and similar substances are produced.

    The Mastery of the Air William J. Claxton
British Dictionary definitions for oil shale

oil shale

noun
1.
a fine-grained shale containing oil, which can be extracted by heating
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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oil shale in Science
oil shale  
A fine-grained black or dark brown shale containing hydrocarbons in the form of kerogen. When heated, oil shale yields petroleum or natural gas.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Word Value for oil

3
4
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