| ecological fallacy | The bias that may occur because an association observed between variables at an aggregate level does not necessarily represent an association that exists at an individual level; an error of inference due to failure to distinguish between different levels of organization. (05 Mar 2000) |
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| ecological protection | <ecology> Protection consists of measures undertaken to protect and preserve elements of an ecosystem's structure and functions against future degradation. (10 Nov 1998) |
| ecological restoration | <ecology> The process of renewing and maintaining ecosystem health. Ecological restoration is the process of intentionally altering a site to establish a defined, indigenous, historic ecosystem. The goal of this process is to emulate the structure, function, diversity, and dynamics of the specified ecosystem. (10 Nov 1998) |
| ecological system | <ecology> An ecosystem is the dynamic and interrelating complex of plant and animal communities and their associated non-living environment. The physical and climactic features and all the living and dead organisms in an area that are interrelated in the transfer of energy and material. An interacting complex of a community and its environment functioning as an ecological unit in nature. Differs from system in being a more rigorous definition that encompasses and requires assumptions of energetics, ecological interactions, species adaptations and so forth. (13 Nov 1997) |
| ecological systems, closed | Systems that provide for the maintenance of life in an isolated living chamber through reutilization of the material available, in particular, by means of a cycle wherein exhaled carbon dioxide, urine, and other waste matter are converted chemically or by photosynthesis into oxygen, water, and food. (12 Dec 1998) |
| ecology | <study> The scientific study of the relationship of organisms to each other and to their environment. (09 Oct 1997) |
| ecomania | <psychiatry> An obsolete term for a syndrome of domineering behaviour at home and humility toward persons in authority. Origin: eco-+ G. Mania, frenzy (05 Mar 2000) |
| econazole | <chemical> A broad spectrum antimycotic with some action against gram positive bacteria. It is used topically in dermatomycoses also orally and parenterally. Pharmacological action: antifungal agents. Chemical name: 1H-Imidazole, 1-(2-((4-chlorophenyl)methoxy)-2-(2,4-dichlorophenyl)ethyl)- (12 Dec 1998) |
| economic botany | <study> The study of plants and plant products that can be used for profit, such as in the field of agriculture or medicine. (13 Nov 1997) |
| economic coefficient | In growth and cultivation of microorganisms, the ratio of the mass produced to the substrate consumed. (05 Mar 2000) |
| economic competition | The effort of two or more parties to secure the business of a third party by offering, usually under fair or equitable rules of business practice, the most favourable terms. (12 Dec 1998) |
| economic entomology | <study> The study of insects which are able to cause economic losses by destroying plants or animals that are commercially valuable. (09 Oct 1997) |
| economic sector | A subdivision of economic activities based on major purpose (for example, "commercial sector" or "private sector"). (05 Dec 1998) |
| economic value of life | The evaluation of the monetary value of a life lost or a life saved. (12 Dec 1998) |
| economics | 1. <study> The science of household affairs, or of domestic management. 2. Political economy; the science of the utilities or the useful application of wealth or material resources. See Political economy, under Political. "In politics and economics." Origin: Gr, equiv. To. (10 Nov 1998) |