| renewable energy resource | <ecology> An energy resource replenished continuously or that is replaced after use through natural means. Sustainable energy. Renewable energy resources include bioenergy, solar energy, wind energy, geothermal power, and hydropower. (25 Jun 1999) |
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| resource | <chemistry> Total amount of a substance which exists in the earth and could conceivably be extracted someday at some price with some technology. Typically much larger than reserves. (10 Mar 1998) |
| resource conservation and recovery act | (RCRA) A federal law regulating solid and hazardous waste. RCRA governs the generation, storage, treatment, transport, and disposal of hazardous waste. (05 Dec 1998) |
| resource values | A resource, natural or social, that is found in an area. Resource values may have varying levels of significance. (05 Dec 1998) |
| integrated resource planning | See Least cost planning. (05 Dec 1998) |
| thermal resource | A facility that produces electricity by using a heat engine to power an electric generator. The heat may be supplied by the combustion of coal, oil, natural gas, biomass, or other fuels, including nuclear fission, solar, or geothermal resources. (05 Dec 1998) |
| paraganglioma, extra-adrenal | A relatively rare, usually benign neoplasm originating in the chemoreceptor tissue of the carotid body, glomus jugulare, and aortic bodies. It consists histologically of rounded or ovoid hyperchromatic cells that tend to be grouped in an alveolus-like pattern within a scant to moderate amount of fibrous stroma and a few large thin-walled vascular channels. They are uncommon before the age of 20, with a female predominance in some series. (12 Dec 1998) |
| extra | 1. Something in addition to what is due, expected, or customary; something in addition to the regular charge or compensation, or for which an additional charge is made; as, at European hotels lights are extras. 2. <prefix> Without, outside of. Source: Websters Dictionary (21 Jun 2000) |
| extra-abdominal desmoid | A deep-seated firm tumour, most frequently occurring on the shoulders, chest, or back of young men or women, consisting of collagenous fibrous tissue that infiltrates surrounding muscle; frequently recurs but does not metastasize. (05 Mar 2000) |
| extra-anatomic bypass | A vascular bypass that does not conform to the preexisting anatomy. (05 Mar 2000) |
| extra-articular | <anatomy> Situated outside of a joint. Source: Websters Dictionary (01 Mar 1998) |
| extra-axial | Off the axis; applied to intracerebral lesions that do not arise from the brain itself. (05 Mar 2000) |
| extra-floral | Of nectaries, not within the flower. (09 Oct 1997) |
| extra nodal lymphoma | <oncology, tumour> Literally outside the lymph nodes, but exhibiting the characteristics of lymph node cancer. A term used to describe the extent and site of disease. (27 Sep 1997) |
| extra-ocular muscle disease | <radiology> Graves disease, pseudotumour, lymphoma, metastasis, infection, carotid-cavernous fistula, granulomatous disease (12 Dec 1998) |