Etymology : Middle English oile, from Old French, from Latin oleum olive oil, from Greek elaion, from elaia olive
Pronunciation : 'oi(&)l
Function : noun
Date : 13th century
1. greasy liquid (derived from animal, vegetable, and mineral substances) that does not mix with water and is used for many purposes (i.e. food, fuel, lubrication, etc.); petroleum. spread with oil; grease, lubricate. oilengines, using either an atomized spray or the vapor (produced by heat) of a comparatively heavy oil, as petroleum or kerosene. in all of these the gas is mixed with a definite amount of air, the charge is composed in the cylinder and is then exploded either by a flame of gas (..see:
internal-combustion engine.
2. Any one of a great variety of unctuous combustible substances, not miscible with water; as, olive oil, whale oil, rock oil, etc.
3. They are of animal, vegetable, or mineral origin and of varied composition, and they are variously used for food, for solvents, for anointing, lubrication, illumination, etc.
4. By extension, any substance of an oily consistency; as, oil of vitriol.
5. To smear or rub over with oil; to lubricate with oil; to anoint with oil. oil paint used by an artist a slippery or viscous liquid or liquefiable substance not miscible with water cover with oil, as if by rubbing; "oil the wooden surface".
6. 1. Oil is a smooth, thick liquid that is used as a fuel and for making the parts of machines move smoothly. Oil is found underground. The company buys and sells about 600,000 barrels of oil a day. the rapid rise in prices for oil and petrol. a small oil lamp.
7. If you oil something, you put oil onto or into it, for example to make it work smoothly or to protect it. A crew of assistants oiled and adjusted the release mechanism until it worked perfectly.
8. Oil is a smooth, thick liquid made from plants and is often used for cooking. Combine the beans, chopped mint and olive oil in a large bowl.
9. Oil is a smooth, thick liquid, often with a pleasant smell, that you rub into your skin or add to your bath. Try a hot bath with some relaxing bath oil.
10. Oils are oil paintings. Her colourful oils and works on paper have a naive, dreamlike quality.
11. When an artist paints in oils, he or she uses oil paints. When she paints in oils she always uses the same range of colours. see also:
castor oil, crude oil, olive oil.
12. If someone or something oils the wheels of a process or system, they help things to run smoothly and successfully. On all such occasions, the king stands in the wings, oiling the wheels of diplomacy.
13. to burn the midnight oil: see:
midnight. Any 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. Arabian American Oil Company crude oil castor oil plant cod liver oil essential oil Gulf Oil Corp. Millikan oil drop experiment oil painting oil seal oil shale shale oil Standard Oil Company and Trust oil of vitriol Anglo Persian Oil Co. Ltd.
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