| reserve air | The extra volume of air that can be expired with maximum effort beyond the level reached at the end of a normal, quiet expiration. Common abbreviation is erv. (12 Dec 1998) |
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| reserve force | The energy residing in the organism or any of its parts above that required for its normal functioning. (05 Mar 2000) |
| reserve margin | The amount by which the utility's total electric power capacity exceeds maximum electric demand. (05 Dec 1998) |
| inspiratory reserve volume | The extra volume of air that can be inspired with maximal effort after reaching the end of a normal, quiet inspiration. Common abbreviation is irv. (12 Dec 1998) |
| expiratory reserve volume | The extra volume of air that can be expired with maximum effort beyond the level reached at the end of a normal, quiet expiration. Common abbreviation is erv. (12 Dec 1998) |
| late-successional reserve | An area of forest where the management objective is to protect and enhance conditions of late successional and old-growth forest ecosystems. (05 Dec 1998) |
| west | 1. The point in the heavens where the sun is seen to set at the equinox; or, the corresponding point on the earth; that one of the four cardinal points of the compass which is in a direction at right angles to that of north and south, and on the left hand of a person facing north; the point directly opposite to east. "And fresh from the west is the free wind's breath." (Bryant) 2. A country, or region of country, which, with regard to some other country or region, is situated in the direction toward the west. 3. Specifically: The Westen hemisphere, or the new World so called, it having been discovered by sailing westward from Europe; the Occident. Formerly, that part of the United States west of the Alleghany mountains; now, commonly, the whole region west of the Mississippi river; especially, that part which is north of the Indian Territory, new Mexico, etc. Usually with the definite article. West by north, West by south, according to the notation of the mariner's compass, that point which lies 11 1/4 deg to the north or south, respectively, of the point due west. West northwest, West southwest, that point which lies 22 1/2 deg to the north or south of west, or halfway between west and northwest or southwest, respectively. Origin: AS. West, adv.; akin to D. West, G. West, westen, OHG. Westan, Icel. Vestr, Sw. Vest, vester, vestan, Dan. Vest, vesten, and perhaps to L. Vesper evening, Gr. . Cf. Vesper, Visigoth. Source: Websters Dictionary (01 Mar 1998) |
| West African fever | A condition, now uncommon, resulting from Plasmodium falciparum infection (malignant tertian malaria with severe haemolysis); frequently seen in Caucasians after interrupted treatment with quinine. Synonym: blackwater fever, haemoglobinuric fever, West African fever. (05 Mar 2000) |
| West African sleeping sickness | A chronic disease of humans caused by Trypanosoma brucei gambiense in northern and sub-Saharan Africa from Senegal east to Sudan and Uganda; characterised by splenomegaly, drowsiness, an uncontrollable urge to sleep, and the development of psychotic changes; basal ganglia and cerebellar involvement commonly lead to chorea and athetosis; the terminal phase of the disease is characterised by wasting, anorexia, and emaciation that gradually leads to coma and death, usually from intercurrent infection. Synonym: chronic African sleeping sickness, chronic trypanosomiasis, West African sleeping sickness, West African trypanosomiasis. (05 Mar 2000) |
| West African trypanosomiasis | A chronic disease of humans caused by Trypanosoma brucei gambiense in northern and sub-Saharan Africa from Senegal east to Sudan and Uganda; characterised by splenomegaly, drowsiness, an uncontrollable urge to sleep, and the development of psychotic changes; basal ganglia and cerebellar involvement commonly lead to chorea and athetosis; the terminal phase of the disease is characterised by wasting, anorexia, and emaciation that gradually leads to coma and death, usually from intercurrent infection. Synonym: chronic African sleeping sickness, chronic trypanosomiasis, West African sleeping sickness, West African trypanosomiasis. (05 Mar 2000) |
| West, Charles | <person> English physician, 1816-1898. See: West's syndrome. (05 Mar 2000) |
| west indian | Belonging or relating to the West Indies. <botany> West India tea, a shrubby plant (Capraria biflora) having oblanceolate toothed leaves which are sometimes used in the West Indies as a substitute for tea. Source: Websters Dictionary (01 Mar 1998) |
| West Indian smallpox | A mild form of smallpox caused by a less virulent strain of the virus. Synonym: Cuban itch, Kaffir pox, milkpox, pseudosmallpox, pseudovariola, variola minor, West Indian smallpox, whitepox. Origin: Pg. Alastrar, to scatter over (05 Mar 2000) |
| west indies | Islands lying between southeastern north america and northern south america, enclosing the caribbean sea. They comprise the greater antilles (cuba, dominican republic, haiti, jamaica, and puerto rico), the lesser antilles (antigua and the other leeward islands, barbados, martinique and the other windward islands, netherlands antilles, virgin islands of the united states, and the islands north of venezuela which include trinidad and tobago), and the bahamas. (12 Dec 1998) |
| West Nile encephalitis virus | Caused by a virus in the family Flaviviridae. Synonym: West Nile virus. (05 Mar 2000) |