| oil of turpentine | Volatile oil distilled from the oleoresin and obtained from Pinus palastrus (family Pinaceae) and other species of Pinus yielding terpene oils. Solvent for oils, resins, varnishes; vehicle, thinner and remover of oil-based paints. Rubefacient; has been used as a counterirritant in liniments. (05 Mar 2000) |
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| oil of vitriol | H2SO4;a colourless, nearly odourless, heavy, oily, corrosive liquid containing 96% of the absolute acid; used occasionally as a caustic. Synonym: oil of vitriol. (05 Mar 2000) |
| oil of wormwood | Volatile oil from leaves and tops of Artemisia absinthium (family Compositae). Thujol alcohol and acetate; thujone (a powerful convulsant), phellandrene, cadinene; also a blue oil. Used in flavoring of vermouth; formerly in absinthe. (05 Mar 2000) |
| oil pneumonia | Lipoid pneumonia, pulmonary condition marked by inflammatory and fibrotic changes in the lungs due to the inhalation of various oily or fatty substances, particularly liquid petrolatum, or resulting from accumulation in the lungs of endogenous lipid material, either cholesterol from obstructive pneumonitis or following fracture of a bone; phagocytes containing lipid are usually present. Synonym: oil pneumonia. (05 Mar 2000) |
| oil red O | 1-8-[4-(Dimethylphenylazo)dimethylphenylazo]-2-naphthalenol;a weakly acid diazo oil-soluble dye, used in histologic demonstration of neutral fats. (05 Mar 2000) |
| oil retention enema | A rectal injection of mineral oil, introduced at low pressure and retained for several hours before expelling, to soften faeces. (05 Mar 2000) |
| oil sugar | A class of preparations made by the trituration of a volatile oil (anise, fennel, lemon, etc.) with sugar; used as a diluent or corrigent of powerful or bad tasting drugs in powder form. Synonym: oil sugar. Origin: oleo-+ G. Saccharon, sugar (05 Mar 2000) |
| oil tumour | A nodule or focus of granulomatous inflammation (usually of the foreign-body type) in association with lipid material deposited in tissues, e.g., after the injection of certain oils. See: paraffinoma. Synonym: eleoma, oil tumour, oleogranuloma, oleoma. (05 Mar 2000) |
| oil vaccine | A vaccine that contains an adjuvant; most often the antigen (immunogen) is included in a water-in-oil emulsion (Freund incomplete type adjuvant), or is adsorbed onto an inorganic gel (alum, aluminum hydroxide or phosphate). (05 Mar 2000) |
| olive oil | The expressed oil of the fruit of Olea europaea; used as a cholagogue, laxative, and emollient, in the preparation of liniments, and in the preparation of foods. (05 Mar 2000) |
| origanum oil | The volatile oil (which contains carvacrol) obtained from various species of Origanum (family Labiatae); used as a rubefacient, as a constituent in veterinary liniments, and in microscopic techniques. (05 Mar 2000) |
| tarragon oil | A volatile oil distilled from the leaves of Artemisia dranculus (family Compositae); a flavoring. Synonym: estragon oil. (05 Mar 2000) |
| teel oil | <chemical> The refined fixed oil obtained from the seed of one or more cultivated varieties of sesamum indicum. It is used as a solvent and oleaginous vehicle for drugs and has been used internally as a laxative and externally as a skin softener. It is used also in the manufacture of margarine, soap, and cosmetics. Chemical name: Fats and Glyceridic oils, sesame (12 Dec 1998) |
| theobroma oil | The fat obtained from the wasted seed of Theobroma cacao (family Sterculiaceae); it contains the glycerides of stearic, palmitic, oleic, arichidic, and linoleic acids; used as a base for suppositories and ointments and, in operative dentistry, as a lubricant and protective. Synonym: cacao butter, cocoa butter, cacao oil. Origin: G. Theos, a god, + broma, food (05 Mar 2000) |
| thuja oil | Oil obtained by steam distillation from the fresh leaves of Thuja occidentalis; used as an insect repellent and counterirritant, and in perfumery. Synonym: thuja oil. (05 Mar 2000) |