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aqueduct

aqueduct (ăk´wədŭkt) [Lat.,=conveyor of water], channel or trough built to convey water, chiefly for providing a densely populated region with a supply of freshwater. The flow in aqueducts is ordinarily by means of gravity, although pumps are often used. Some aqueducts consist of tunnels cut through rock, while others are conduits made of some sturdy material. For example, the conduit may consist of steel pipe, concrete, wooden staves, sheet-metal flume, or any of these in combination, the flow being controlled by slide gate and needle valves. Aqueducts enable many cities in the United States to obtain water from a considerable distance. Los Angeles, for example, draws much of its water from the Owens River by means of an aqueduct more than 230 mi (370 km) long. Most of the supply for New York City is conducted through the Catskill Aqueduct and the Croton Aqueduct. The topography of the land influences the design of the aqueduct; usually part of the structure is above ground and part below. Where feasible, an aqueduct may generate hydroelectric power as a byproduct of its operation. Typical of such use is the aqueduct system for Springfield, Mass., which generates power at the foot of Cobble Mt. in addition to supplying the city with water. Aqueducts were employed from early times, probably first in Mesopotamia. Their construction reached a peak of skill in Roman times. Portions of some of the original Roman aqueducts are still standing.

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"aqueduct." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"aqueduct." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/aqueduct

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aqueduct

aqueduct. Structure for artificially conveying a constant supply of water, consisting of a channel (usually covered to prevent evaporation and/or pollution) supported on piers over valleys, roads, etc., and cut through hills. Numerous Antique remains of aqueducts survive, the most impressive being the huge arcaded structure over the Roman Campagna, and that over the River Gard in France. Some C19 aqueducts carrying canals, such as Telford's Pont-y-Cysyllte (1795–1805) over the River Dee, in the Vale of Llangollen, Denbighshire, Clwyd, Wales, consist of cast-iron structures carried on massive piers.

Bibliography

Skempton et al. (eds.) (2002);
Ward-Perkins (1981)

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"aqueduct." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"aqueduct." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/aqueduct

"aqueduct." A Dictionary of Architecture and Landscape Architecture. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/aqueduct

aqueduct

aqueduct Artificial channel for conducting water from its source to its distribution point. While the ancient Romans were not the first to build these conduits, their aqueducts are the most famous because of their graceful architectural structures. One of their most extensive water systems, which served Rome itself, consisted of 11 aqueducts and took 500 years to complete. California has the world's largest conduit system: it carries water across a distance of more than 800km (500mi).

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"aqueduct." World Encyclopedia. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

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"aqueduct." World Encyclopedia. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/aqueduct

aqueduct

aq·ue·duct / ˈäkwəˌdəkt; ˈak-/ • n. an artificial channel for conveying water, typically in the form of a bridge supported by tall columns across a valley. ∎  Anat. a small canal containing fluid. ORIGIN: mid 16th cent.: from obsolete French (now aqueduc), from Latin aquae ductus ‘conduit,’ from aqua ‘water’ + ducere ‘to lead.’

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"aqueduct." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"aqueduct." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/aqueduct-0

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aqueduct

aqueduct (ak-wi-dukt) n. (in anatomy) a canal containing fluid. a. of the midbrain (cerebral a., a. of Sylvius) a canal connecting the third and fourth ventricles.[ F. Sylvius de la Boe (1614–72), French anatomist]

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"aqueduct." A Dictionary of Nursing. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

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aqueduct

aqueduct XVI. — L. aquæductus, i.e. aquæ, g. of aqua water, ductus conveyance (see DUCT). cf. F. aqueduc, †aqueduct (XVI), perh. the immed. source.

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"aqueduct." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"aqueduct." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/aqueduct-1

"aqueduct." The Concise Oxford Dictionary of English Etymology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/aqueduct-1

aqueduct

aqueductaddict, afflict, conflict, constrict, contradict, convict, delict, depict, evict, hand-picked, inflict, interdict, Pict, predict, strict •edict •Benedict • verdict •imperfect, perfect, pluperfect, word-perfect •object • subject • relict • district •concoct, decoct •landlocked • dreadlocked •unprovoked, unsmoked •uncooked, unlooked •abduct, adduct, conduct, construct, destruct, duct, instruct, misconduct, obstruct •ventiduct • aqueduct • product •safe-conduct • viaduct •handworked, unworked •mulct • unthanked • sacrosanct •distinct, extinct, succinct •precinct • instinct •conjunct, defunct, disjunct, injunct •adjunct • unasked

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"aqueduct." Oxford Dictionary of Rhymes. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

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"aqueduct." Oxford Dictionary of Rhymes. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/aqueduct