Lipids can be classified by the way that they are made by an organism, their chemical structure and their limited solubility in water compared to oils. Organic oils may also contain chemicals other than lipids, including proteins, waxes (class of compounds with oil-like properties that are solid at common temperatures) and alkaloids. Lipid is the scientific term for the fatty acids, steroids and similar chemicals often found in the oils produced by living things, while oil refers to an overall mixture of chemicals.
Organic oils are produced in remarkable diversity by plants, animals, and other organisms through natural metabolic processes. The earliest attested forms of the word are the Mycenaean Greek 𐀁𐀨𐀺, e-ra-wo and 𐀁𐁉𐀺, e-rai-wo, written in the Linear B syllabic script. Specially prepared oils are used in some religious ceremonies and rituals as purifying agents.įirst attested in English 1176, the word oil comes from Old French oile, from Latin oleum, which in turn comes from the Greek ἔλαιον ( elaion), "olive oil, oil" and that from ἐλαία ( elaia), " olive tree", "olive fruit". motor oil), and the manufacture of many types of paints, plastics, and other materials.
They are used for food (e.g., olive oil), fuel (e.g., heating oil), medical purposes (e.g., mineral oil), lubrication (e.g. Oils may be animal, vegetable, or petrochemical in origin, and may be volatile or non-volatile. The general definition of oil includes classes of chemical compounds that may be otherwise unrelated in structure, properties, and uses. Most oils are unsaturated lipids that are liquid at room temperature. Oils are usually flammable and surface active.
Without proper rendering support, you may see question marks, boxes, or other symbols.Īn oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). This article contains special characters.
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