HyperDic: oil_shale

English > 1 sense of the expression oil shale:
NOUNsubstanceoil shaleshale from which oil can be obtained by heating
English > oil shale: 1 sense > noun 1, substance
Meaningshale from which oil can be obtained by heating.
BroadershaleA sedimentary rock formed by the deposition of successive layers of clay
Catalanpissarra bituminosa

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