| ¿µ¹® | organic brain syndrome | ÇÑ±Û | ±âÁúÀû ³úÁõÈıº |
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| 'Greek letter alpha' | angular acceleration; first [carbon atom next to the carbon atom bearing the active group in organic... |
|---|---|
| VOC | volatile organic chemical |
| beta [Greek letter beta] | an anomer of a carbohydrate; buffer capacity; carbon separated from a carboxyl by one other carbon i... |
| FUFA | free volatile fatty acid |
| NV | nausea and vomiting; negative variation; neovascularization; next visit; nonveteran; normal value; n... |
| VOC | Volatile Organic Compounds |
|---|---|
| VSC | Volatile sulfur compounds |
| VOC | Volatile organic chemicals |
| VFA | Volatile Fatty Acids |
| VA | volatile anesthetic |
| volatile organic compounds | (VOC) Emissions of non-methane hydrocarbons, measured by standard DEQ methods. (05 Dec 1998) |
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| volatile | 1. Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having the power to fly. 2. Capable of wasting away, or of easily passing into the aeriform state; subject to evaporation. Substances which affect the smell with pungent or fragrant odors, as musk, hartshorn, and essential oils, are called volatile substances, because they waste away on exposure to the atmosphere. Alcohol and ether are called volatile liquids for a similar reason, and because they easily pass into the state of vapor on the application of heat. On the contrary, gold is a fixed substance, because it does not suffer waste, even when exposed to the heat of a furnace; and oils are called fixed when they do not evaporate on simple exposure to the atmosphere. 3. Light-hearted; easily affected by circumstances; airy; lively; hence, changeable; fickle; as, a volatile temper. "You are as giddy and volatile as ever." (Swift) Volatile alkali. <chemistry> See Essential oils, under Essential. Origin: F. Volatil, L. Volatilis, fr. Volare to fly, perhaps akin to velox swift, E. Velocity. Cf. Volley. Source: Websters Dictionary (01 Mar 1998) |
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| volatile anaesthetic | A liquid anaesthetic that at room temperature volatilises to a vapor which when inhaled is capable of producing general anaesthesia. See: anaesthetic vapor. (05 Mar 2000) |
| volatile fatty acid number | An index of the volatile acid content of a fat; the number of milliliters of 0.1 n KOH required to neutralise the soluble volatile fatty acids in 5 g of fat that has been saponified, acidified to liberate the fatty acids, and then steam-distilled. Synonym: volatile fatty acid number. (05 Mar 2000) |
| volatile mustard oil | CH2==CH-CH2-NCS; volatile mustard CH-allylisosulfocyanate; isothiocyanic allyl ester;obtained from Brassica nigra or produced synthetically; a vesicant, used in 10% solution in 50% alcohol as a counterirritant in neuralgia. Gives mustard its characteristics flavor and aroma. See: mustard oil. Synonym: volatile mustard oil. (05 Mar 2000) |
| volatile oil | A substance of oily consistency and feel, derived from a plant and containing the principles to which the odour and taste of the plant are due (essential oil); in contrast to a fatty oil, a volatile oil evaporates when exposed to the air and thus is capable of distillation; it may also be obtained by expression or extraction; many volatile oil's, identical to or closely resembling the natural oil's, can be made synthetically. Volatile oil's are used in medicine as stimulants, stomachics, correctives, carminatives, and for purposes of flavoring (e.g., peppermint oil). Synonym: ethereal oil. (05 Mar 2000) |
| sal volatile | A hydroalcoholic solution containing approximately 2% ammonia and 4% ammonium carbonate and the aromatics: lemon oil, lavender oil, and myristica oil. Used mainly by inhalation to produce reflex stimulation in persons who have fainted or are at risk of syncope. Synonym: sal volatile, smelling salts. (05 Mar 2000) |
| oils, volatile | Oils which evaporate readily. The volatile oils occur in aromatic plants, to which they give odour and other characteristics. most volatile oils consist of a mixture of two or more terpenes or of a mixture of an eleopten (the more volatile constituent of a volatile oil) with a stearopten (the more solid constituent). The synonym essential oils refers to the essence of a plant, as its perfume or scent, and not to its indispensibility. (12 Dec 1998) |
| fatty acids, volatile | Short-chain fatty acids of up to six carbon atoms in length. They are the major end products of microbial fermentation in the ruminant digestive tract and have also been implicated in the causation of neurological diseases in humans. (12 Dec 1998) |
| acute organic brain syndrome | <syndrome> A constellation of behavioural or psychological signs and symptoms including problems with attention, concentration, memory, confusion, anxiety, and depression caused by transient or permanent dysfunction of the brain. Synonym: acute organic brain syndrome, OBS, organic mental syndrome. (05 Mar 2000) |
| substance-induced organic mental disorders | Mental disorders caused by use of drugs, e.g., cocaine. (05 Mar 2000) |
| organic | Any foods grown without the use of chemical fertilisers or pesticides, in soil made rich by composting and mulching. Pertaining to carbon-based compounds produced by living plants, animals or by synthetic processes. (27 Sep 1997) |
| organic acid | An acid made up of molecules containing organic radicals; e.g., acetic acid, citric acid, which contain the ionizable -COOH group. (05 Mar 2000) |
| organic brain syndrome | <syndrome> A constellation of behavioural or psychological signs and symptoms including problems with attention, concentration, memory, confusion, anxiety, and depression caused by transient or permanent dysfunction of the brain. Synonym: acute organic brain syndrome, OBS, organic mental syndrome. (05 Mar 2000) |
| organic catalyst | A catalyst that is an organic molecule. See: enzyme, ribozyme. (05 Mar 2000) |
| organic chemicals | A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form. (12 Dec 1998) |
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