a black or dark-brown shale or siltstone rich in bitumens, from which shale oil is obtained by destructive distillation.
Y.E.S: These Words Are AcronymsRead more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of oil shale
First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for oil shale
Oil-shale is plentiful on the Congo River near Ponthierville and good indications of oil are recorded in other places.An African Adventure|Isaac F. Marcosson
British Dictionary definitions for oil shale
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
Science definitions for 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.