a sand or sandstone containing oil or tarry residue in the pore spaces.
a sandstone impregnated with hydrocarbons, esp such deposits in Alberta, Canada
A stratum of sand or sandstone containing petroleum that can be extracted by way of wells. The term is also applied to limestone and dolomite strata that contain petroleum.
- Oil security
noun a plan to shield a country from the economic damage caused by sudden, sharp rises in oil prices caused by wars, terrorism, accidents, natural disasters, or political decisions, esp. by arranging to get oil from multiple countries Examples The Arctic National Wildlife Rescue will be crucial to U.S. oil security.
[oil-seed] /ˈɔɪlˌsid/ noun 1. any of several , as the castor bean, sesame, or cottonseed, from which an is expressed.
- Oilseed cake
noun a compacted mixture of the meal remaining after vegetable oil has been extracted from seeds such as cottonseed and groundnut and used as animal feed or fertilizer; also called oilcake Word Origin 1850
- Oil-seed rape
noun 1. another name for rape2