| liquid air | Air that, by means of intense cold and pressure, has been liquefied. (05 Mar 2000) |
|---|---|
| liquid extract | Pharmacopeial liquid preparation of vegetable drugs, made by percolation, containing alcohol as a solvent or as a preservative, or both, and so made that each milliliter contains the therapeutic constituents of 1 g of the standard drug that it represents. Synonym: liquid extract. (05 Mar 2000) |
| liquid glucose | A pharmaceutic aid consisting of dextrose, dextrins, maltose, and water, obtained by the incomplete hydrolysis of starch. (05 Mar 2000) |
| liquid human serum | The pool of fluids separated from blood withdrawn from human subjects and allowed to clot in the absence of any anticoagulant; not more than 10 separate donations are pooled; the contributions from donors of A, O, and either B or AB groups are represented in approximately the ratio 9:9:2. (05 Mar 2000) |
| liquid hydrocarbon | One of a very large group of chemical compounds composed only of carbon and hydrogen. The largest source of hydrocarbons is petroleum. (05 Dec 1998) |
| liquid metal | <radiobiology> Metal which has been heated past its melting point and can be used as a working fluid for pumping heat out from a powerplant. Liquid metal used as coolant in a system where significant magnetic fields exist, it behaves differently due to magnetohydrodynamic effects, these cause pressure which resists fluid circulation, suppression of turbulence, and altered flow patterns compared to non-magnetic liquid metal systems. (09 Oct 1997) |
| liquid-metal fast-breeder reactor | <physics> Fission breeder reactor concept using liquid-metal coolant and breeding additional fuel off fast neutrons. See: breeder reactor. (09 Oct 1997) |
| liquid paraffin | <chemical> A mixture of liquid hydrocarbons obtained from petroleum. It is used as laxative, lubricant, ointment base, and emollient. Pharmacological action: cathartic, emollients, ointment bases. Chemical name: Hydrocarbon oils (12 Dec 1998) |
| liquid petroleum | <chemical> A mixture of liquid hydrocarbons obtained from petroleum. It is used as laxative, lubricant, ointment base, and emollient. Pharmacological action: cathartic, emollients, ointment bases. Chemical name: Hydrocarbon oils (12 Dec 1998) |
| liquid pitch | Obtained by the destructive distillation of the wood of Pinus palustris and other species of Pinus; used internally as an expectorant, and externally in the treatment of skin diseases. Synonym: liquid pitch. (05 Mar 2000) |
| abiotic stress | <botany> Nonliving environmental factors (such as drought, extreme cold or heat, high winds) that can have harmful effects on plants. (06 May 1997) |
| acute stress reaction | A sudden bout of anxiety that is often accompanied by the features of hyperventilation (tingling around mouth and in fingertips, rapid breathing, faintness or fainting). (27 Sep 1997) |
| biotic stress | <biology> Living organisms which can harm plants, such as viruses, fungi, bacteria, and harmful insects. (19 Jan 1998) |
| magnetic stress tensor | <radiobiology> A second-rank tensor, proportional to the dyadic product of the magnetic field (B) with itself. The divergence of the magnetic stress tensor gives that part of the force which a magnetic field exerts on a unit volume of conducting fluid due to the curvature of the magnetic field lines. (09 Oct 1997) |
| contraction stress test | A test used to evaluate foetal well-being by inducing contractions and analyzing the foetal heart rate response. (05 Mar 2000) |