plural of shale

Third-person singular simple present indicative form of shale

A shell or husk; a cod or pod. / (geology) A fine-grained sedimentary rock of a thin, laminated, and often friable, structure.

To take off the shell or coat of.

present participle of shale

simple past tense and past participle of shale

plural of black shale

plural of oil shale

plural of bituminous shale

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