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shale oil

noun
1.
petroleum distilled from oil shale.
Origin of shale oil
1855-1860
1855-60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for shale oil

shale oil

noun
1.
an oil distilled from shales and used as fuel
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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Word Value for shale

8
8
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