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| Terms for subject Environment (5582 entries) |
| development planning (The act or process of formulating a course of action that promotes the economic advancement of a region or people, particularly in countries known to have low levels of economic productivity and technological sophistication) | planificació del desenvolupament | |
| devolution (The act of assigning or entrusting authority, powers or functions to another as deputy or agent, typically to a subordinate in the administrative structure of an organization or institution) | descentralització | |
| dialysis (A process of selective diffusion through a membrane; usually used to separate low-molecular-weight solutes which diffuse through the membrane from the colloidal and high-molecular-weight solutes which do not) | diàlisi | |
| diatom (Unicellular algae, some of which are colonial, green or brownish in colour (but all contain chlorophyll) and with siliceous and often highly sculptured cell walls. Diatoms make up much of the producer level in marine and freshwater food chains, and they have contributed to the formation of oil reserves. Deposits of diatomaceous earths were formed by the accumulation of diatom cell walls) | diatomees | |
| didactics (The art or science of teaching) | didàctica | |
| diesel engine (An internal combustion engine operating on a thermodynamic cycle in which the ratio of compression of the air charge is sufficiently high to ignite the fuel subsequently injected into the combustion chamber) | motors diesel | |
| diesel fuel (Heavy oil residue used as fuel for certain types of diesel engines) | gasoil | |
| differentiation (The development of cells so that they are capable of performing specialized functions in the organs and tissues of the organisms to which they belong) | diferenciació | |
| diffuse pollution (Pollution from widespread activities with no one discrete source, e.g. acid rain, pesticides, urban run-off etc.) | contaminació difusa | |
| diffuse source (Pollution which arises from various activities with no discrete source) | font difusa | |
| diffusion (The spontaneous movement and scattering of particles (atoms and molecules), of liquid, gases, and solids) | difusió | |
| digested sludge (Sludge or thickened mixture of sewage solids with water that has been decomposed by anaerobic bacteria) | fang actiu | |
| digester (Machine which takes refuse and produces gas such as methane from it) | digestor | |
| digestion (sewage, The reduction in volume and the decomposition of highly putrescible organic matter to relatively stable or inert organic and inorganic compounds. Sludge digestion is usually done by aerobic organisms in the absence of free oxygen) | digestió | |
| digital image processing technique (Techniques employed in the calibration of image data, the correction or reduction of errors occurring during capture or transmission of the data and in various types of image enhancement-operations which increase the ability of the analyst to recognize features of interest) | tècnica de tractament digital de la imatge | |
| digital land model (A representation of a surface's topography stored in a numerical format. Each pixel has been assigned coordinates and an altitude) | models digitals del terreny | |
| digitizing (The process of converting data to a form used in computers, transmitted or stored with digital technology and expressed as a string of 0's and 1's) | digitalització | |
| diluted acid (A less concentrated acid) | àcid diluït | |
| dioxin (A by-product formed during the preparation of the herbicide 2, 4, 5-T, and sometimes produced by the incineration of chlorinated organic compounds. It may also occur naturally and is distributed widely in the environment, except locally in extremely low concentrations. Substantial amounts were released by the industrial accident of Seveso in 1976) | dioxines | |
| dipteran | dípter |