oil shale

noun
|Updated on: 15 Jul 2018

Definition of oil shale

: a rock (such as shale) from which oil can be recovered by distillation

Recent Examples of oil shale from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'oil shale.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of oil shale

1866

in the meaning defined above

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