| Subject | English | Arabic |
| environ. | energy utilisation No definition needed | استخدام الطاقة |
| environ. | energy utilisation pattern | نمط استخدام الطاقة |
| environ. | landscape utilisation using landscape or parts of it (i.e. for tourism, sports or agriculture); Using landscape or parts of it for tourism, sports, or agriculture | استغلال المنظر الطبيعي |
| environ. | local resource utilisation The use of a source of supply from a municipal or regional area, which can be readily drawn upon when needed | استغلال مورد محلي |
| environ. | resource utilisation No definition needed | استخدام الموارد |
| el.gen. | utilisation factor of the maximum capacity of a unit | عامل الاستعمال للسعة القصوى للوحدة |
| environ. | utilisation of calorific value Calorific value is the heat per unit mass produced by complete combustion of a given substance. Calorific values are used to express the energy values of fuels; usually these are expressed in megajoules per kilogram. They are also used to measure the energy content of foodstuffs; i.e. the energy produced when the food is oxidized in the body. The units here are kilojoules per gram. Calorific values are measured using a bomb calorimeter (apparatus consisting of a strong container in which the sample is sealed with excess oxygen and ignited electrically. The heat of combustion at constant volume can be calculated from the resulting rise in temperature) | استغلال قيمة السعرات الحرارية |
| environ. | utilisation of pesticides Use of chemical or biological substances to deliberately kill unwanted plants or animals | استخدام المبيدات |
| el.gen. | utilisation period at maximum capacity of more units | فترة استعمال القدرة القصوى لاكثر من وحدة |
| el.gen. | utilisation period at maximum capacity of one unit | فترة استعمال القدرة القصوى لوحدة واحدة |
| environ. | waste heat utilisation Waste heat applications include space heating and refrigeration in urban areas, thawing of ice-bound seaways, agricultural use to stimulate growth and to extend the growing season and in aquaculture to stimulate the growth of algae, shellfish, and other potential marine food sources | استغلال حرارة المخلفات |
| environ. | water utilisation Three types of water use are distinguished: 1. withdrawal, where water is taken from a river, or surface or underground reservoir, and after use returned to a natural water body, e.g. water used for cooling in industrial processes. Such return flows are particularly important for downstream users in the case of water taken from rivers; 2. consumptive, which starts with withdrawal but in this case without any return, e.g. irrigation, steam escaping into the atmosphere, water contained in final products, i.e. it is no longer available directly for subsequent uses; 3. non-withdrawal, i.e. the in situ use of a water body for navigation (including the floating of logs by the lumber industry), fishing, recreation, effluent disposal and hydroelectric power generation | استخدام الماء |