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| oil of peppermint | A volatile oil containing menthol (not less than 50% of total) obtained by steam distillation from the fresh flowering plant Mentha piperita (family Labiatae). Used as a pharmaceutical aid (flavor) and in flavoring liqueurs; a carminative. (05 Mar 2000) |
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| oil of rose | A volatile oil from the fresh flowers of Rosa gallica and R. Damascena and other members of the Rosaceae family. Used largely in perfumery; ointments, and toilet preparations. Synonym: attar of rose, essence of rose, otto of rose. (05 Mar 2000) |
| oil of spearmint | Volatile oil from the flowering tops of Mentha spicata (family Labiatae, pharmaceutical aid (flavor) and a carminative. Synonym: oil of crispmint, oil of curled mint. (05 Mar 2000) |
| 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) |
| 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) |