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  1. Dictionary
    oil
    /ɔɪl/

    noun

    • 1. a viscous liquid derived from petroleum, especially for use as a fuel or lubricant.
    • 2. oil paint: "a portrait in oils"

    verb

    • 1. lubricate, coat, or impregnate with oil: "I'll oil that gate for you tomorrow"
    • 2. supply with oil as fuel: "attempts should not be made to oil individual tanks too rapidly"

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    More definitions, origin and scrabble points

  2. www.merriam-webster.com › dictionary › oilOil Definition & Meaning - Merriam-Webster

    The meaning of OIL is any of numerous unctuous combustible substances that are liquid or can be liquefied easily on warming, are soluble in ether but not in water, and leave a greasy stain on paper or cloth.

  3. en.wikipedia.org › wiki › OilOil - Wikipedia

    An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) and lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturated lipids that are liquid at room temperature.

  4. dictionary.cambridge.org › dictionary › englishOIL | English meaning - Cambridge Dictionary

    OIL definition: 1. petroleum (= the black oil obtained from under the earth's surface from which petrol comes): 2…. Learn more.

  5. www.dictionary.com › browse › oilOIL Definition & Meaning | Dictionary.com

    Oil definition: any of a large class of substances typically unctuous, viscous, combustible, liquid at ordinary temperatures, and soluble in ether or alcohol but not in water. See examples of OIL used in a sentence.

  6. www.thefreedictionary.com › oilOil - definition of oil by The Free Dictionary

    Any of a large class of liquid or easily melted substances that are typically very slippery and greasy. Oils are flammable, do not mix with water, and include animal and vegetable fats as well as substances of mineral or synthetic origin. They are used in food, soap, and candles, and make good lubricants and fuels. 2.

  7. www.collinsdictionary.com › dictionary › englishOIL definition and meaning | Collins English Dictionary

    1. any of a number of viscous liquids with a smooth sticky feel. They are usually flammable, insoluble in water, soluble in organic solvents, and are obtained from plants and animals, from mineral deposits, and by synthesis. They are used as lubricants, fuels, perfumes, foodstuffs, and raw materials for chemicals.

  8. www.britannica.com › dictionary › oilOil Definition & Meaning | Britannica Dictionary

    OIL meaning: 1 : a thick, black liquid that comes from the ground and that is used in making various products (such as gasoline) often used before another noun; 2 : a type of oil that is used as a fuel to produce heat or light

  9. www.oxfordlearnersdictionaries.com › definition › englishoil noun - Definition, pictures, pronunciation and usage notes |...

    Definition of oil noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  10. www.britannica.com › science › oil-chemical-compoundOil | Petroleum, Crude, Refining | Britannica

    Jun 12, 2024 · oil, any greasy substance that is liquid at room temperature and insoluble in water. There are many types, such as essential oil; orris oil; mineral oil ( see petroleum ); whale oil; pine oil; linseed oil; perilla oil; fish oil; tall oil; citronella oil. There is also cooking oil, such as olive, vegetable, Canola, and argan.

  11. www.oed.com › dictionary › oil_n1oil, n.¹ meanings, etymology and more - Oxford English Dictionary

    Meaning & use. 1.a. As a mass noun: any of a number of liquids of natural or artificial origin which have a smooth, sticky, unctuous, feel and are insoluble in water (but soluble in organic solvents), more or less viscous, flammable, and chemically neutral.