shale oil

Definitions

1. A synthetic crude oil obtained by the pyrolysis, hydrogenation, or thermal dissolution of oil shale.
   countable, uncountable
2. A crude oil obtained from low permeability petroleum-bearing formations (shales).
   countable, uncountable

Equivalents

Examples

“Up in the mountains along both sides of Parachute Creek the Exxon Corporation and other companies have⟳ begun to pour⟳ billions of dollars into two huge projects to turn⟳ the nation's immense reserves of oil shale into shale oil.”

CEFR level