Streptomycin is also occasionally used to treat infections such as brucellosis and endocarditis. As for TB, when treating these infections, streptomycin should be used in combination with another antibiotic to help prevent resistance occuring.
DEFINITION of 'Oil Shale'. A type of sedimentary rock composed chiefly of a combination of silt and clay. Shale may contain kerogen, a type of organic matter that yields oil and gas.
shale - a sedimentary rock formed by the deposition of successive layers of clay. 1  sedimentary rock - rock formed from consolidated clay sediments. 2  humic shale - shale that is rich in humic acids. 3  oil shale - shale from which oil can be obtained by heating.