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| Terms for subject Environment (5878 entries) |
| allocation plan (The formulation and application of such measures as laws, economic plans, urbanism, etc., to ensure a balance between the population's needs and the country's resources) | خطة تخصيص | |
| allowance | حصة - نصيب | |
| alloy (Any of a large number of substances having metallic properties and consisting of two or more elements; with few exceptions, the components are usually metallic elements) | سبيكة | |
| alluvial plain (A level or gently sloping tract or a slightly undulating land surface produced by extensive deposition of alluvium, usually adjacent to a river that periodically overflows its banks; it may be situated on a flood plain, a delta, or an alluvial fan) | سهل غريني | |
| alluvion (An overflowing; an inundation or flood, especially when the water is charged with much suspended material) | غرين | |
| alpha radiation (A stream of alpha particles which are ejected from many radioactive substances having a penetrating power of a few cm in air but can be stopped by a thin piece of paper) | أشعة ألفا | |
| alternative material (Materials employed in the place of others which are more dangerous for the environment, such as phosphate substitutes in detergents) | مادة بديلة | |
| alternative technology (Technology that, as an alternative to resource-intensive and wasteful industry, aims to utilize resources sparingly, with minimum damage to the environment, at affordable cost and with a possible degree of control over the processes) | تكنولوجيا بديلة | |
| altitude (1. In general, a term used to describe a topographic eminence. 2. A specific altitude or height above a given level. 3. In surveying, the term refers to the angle between the horizontal and a point at a higher level) | ارتفاع | |
| alumina (A natural or synthetic oxide of aluminum widely distributed in nature, often found as a constituent part of clays, feldspars, micas and other minerals, and as a major component of bauxite) | ألومينا | |
| aluminium (A light white metal, ductile and malleable, and a good conductor of electricity. It occurs widely in nature in clays and is the third most abundant element in the Earth's crust. It is extracted mainly from bauxite by electrolysis of a molten mixture of purified bauxite and cryolite. The metal and its alloys are used for aircraft, cooking utensils, electrical apparatus, and for many other purposes where its light weight is an advantage. Aluminium became implicated as an environmental health hazard in the 1980s on two counts. Biomedical scientists looking for possible causes of Alzheimer's disease, the premature senility indicated by loss of memory and confusion, found a circumstantial link with aluminium. The theory is a controversial one, Al) | ألومنيوم | |
| aluminium container (A can or box made of aluminium in which material is held or carried) | وعاء من الألومنيوم | |
| aluminium content (Amount of aluminium contained in a solution) | المحتوى من الألومنيوم | |
| aluminium industry (A sector of the economy in which an aggregate of commercial enterprises is engaged in the mining and processing of aluminum) | صناعة الألومنيوم | |
| alveolus (A tiny, thin-walled, capillary-rich sac in the lungs where the exchange of oxygen and carbon dioxide takes place. Also called air sac) | حويصلات هوائية- حجيرات هوائية | |
| amalgam (A solution of a metal in mercury) | مَلجَم | |
| Americas (The landmasses and islands of North America, South America, Mexico, and Central America included in the Western Hemisphere) | الأمريكتين | |
| Ames test (A bioassay developed by Bruce N. Ames in 1974, performed on bacteria to assess the capability of environmental chemicals to cause mutations) | اختبار أميس | |
| amine (One of a class of organic compounds which can be considered to be derived from ammonia by replacement of one or more hydrogens by organic radicals) | أمين | |
| amino acid (Organic compounds containing a carboxyl group (-COOH) and an amino group (-NH2). About 30 amino acids are known. They are fundamental constituents of living matter because protein molecules are made up of many amino acid molecules combined together. Amino acids are synthesized by green plants and some bacteria, but some (arginine, histidine, lysine. threonine, methionine, isoleucine, leucine, valine, phenylalanine, tryptophane) cannot be synthesized by animals and therefore are essential constituents of their diet. Proteins from specific plants may lack certain amino acids, so a vegetarian diet must include a wide range of plant products) | حمض أميني |