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oil |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.07 sec. |
oilAny greasy substance liquid at room temperature and insoluble in water. It may be a fixed (nonvolatile) oil, an essential oil, or a mineral oil (see petroleum). Fixed oils and fats (derived from animals and plants) have the same chemical composition—both are esters of glycerol and fatty acids. These oils have a variety of industrial and food uses. Linseed, tung, and other drying oils are highly unsaturated (see saturation); these and large quantities of soybean, sunflower, and safflower oils (also constituents of foods) are used in paints and varnishes. When exposed to air they absorb oxygen and polymerize (see polymerization), forming a tough coating. Some specialty oils and oil derivatives are also used in leather dressing and textile manufacture.
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? Mentioned in | ? References in periodicals archive | ||
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| Akrofax white grades of vulcanized vegetable oils are white in color and produced by reacting rapeseed oil with sulfur monochloride. An infectious agent seemed implicated, but by mid-June epidemiologic studies revealed the cause to be cooking oil derived from aniline-denatured rapeseed oil. Linseed, rapeseed oil, walnuts, soya oil, and leafy greens are also good sources of Omega 3, although not quite as beneficial as fish. |
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