spar

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spar.

For dogtooth spar, see calcitecalcite
, very widely distributed mineral, commonly white or colorless, but appearing in a great variety of colors owing to impurities. Chemically it is calcium carbonate, CaCO3, but it frequently contains manganese, iron, or magnesium in place of the calcium.
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; for fluorspar, see fluoritefluorite
or fluorspar
, mineral appearing in various colors, e.g., green, yellow-brown, rose, and red. Chemically, it is calcium fluoride, CaF2. Its crystals, commonly cubic, are transparent or translucent and under certain conditions exhibit fluorescence.
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; for heavy spar, see baritebarite
, barytes
[New Lat., from barium], or heavy spar,
a white, yellow, blue, red, or colorless mineral. It is a sulfate of barium, BaSO4, found in nature as tabular crystals or in granular or massive form and has a high specific gravity.
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; for satin spar, see calcitecalcite
, very widely distributed mineral, commonly white or colorless, but appearing in a great variety of colors owing to impurities. Chemically it is calcium carbonate, CaCO3, but it frequently contains manganese, iron, or magnesium in place of the calcium.
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 and gypsumgypsum
, mineral composed of calcium sulfate (calcium, sulfur, and oxygen) with two molecules of water, CaSO4·2H2O. It is the most common sulfate mineral, occurring in many places in a variety of forms. A transparent crystalline variety is selenite.
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. See also Iceland sparIceland spar,
colorless variety of crystallized calcite, characterized by its properties of transparency and double refraction. It is used chiefly in the manufacture of Nicol prisms, which are essential parts of polarizing microscopes and other optical instruments.
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 and feldsparfeldspar
or felspar
, an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.
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.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Spar

 

the equipment above the deck of a ship that is used for mounting loading gear, signals, lights, and radio antennas. Spars are also used as observation and communication posts. On modern self-propelled ships, spars include the masts, topmasts, yards, gaffs, and loading booms. On sailing ships, spars are used for raising, turning, and furling the sails.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

spar

[spär]
(aerospace engineering)
A principal spanwise member of the structural framework of an airplane wing, aileron, stabilizer, and such; it may be of one-piece design or a fabricated section.
(mining engineering)
A small clay vein in a coal seam.
(mineralogy)
Any transparent or translucent, nonmetallic, light-colored, readily cleavable, crystalline mineral; examples are calespar and fluorspar.
(naval architecture)
A long, round stick of steel or wood, often tapered at one or both ends, and usually a part of a ship's masts or rigging.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

spar

2. A bar for fastening a gate or door.
3. A heavy round timber.
4.See brotch.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

spar

spar
A principal lateral, span-wise load-carrying member of an airplane or control surface.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

spar

1
1. 
a. any piece of nautical gear resembling a pole and used as a mast, boom, gaff, etc.
b. (as modifier): a spar buoy
2. a principal supporting structural member of an aerofoil that runs from tip to tip or root to tip

spar

2
an unaggressive fight

spar

any of various minerals, such as feldspar or calcite, that are light-coloured, microcrystalline, transparent to translucent, and easily cleavable
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

SPAR

Early system on Datatron 200 series. Listed in CACM 2(5):16 (May 1959).
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
Previously, the store stocked items carried by Interspar, the 74-store hypermarket chain that Wal-Mart purchased in December 1998 for $500 million.
and 95 former Wertkauf and Interspar stores in Germany, has made no secret of its plans to expand its European presence.The company is now eyeing Europe's third-largest market, France, where it has yet to gain a foothold.
It later bolstered its position by buying 74 Interspar hypermarkets from Spar Handels AG.
Leighton, 45, is in charge of Wal-Mart's operations in the United Kingdom and Germany, where Wal-Mart has 95 stores that were acquired, when Wal-Mart bought the Wertkauf and Interspar chains in 1997.
Wal-Mart owns the Wertkauf hypermarket chain in Germany and acquired 74 Interspar warehouse stores last year.
Wal-Mart entered Germany in 1997 by acquiring the 21-store Wertkauf hypermarket chain, and then bolstered its presence the following year by buying 74 Interspar hypermarkets from Spar Handels AG.
Since purchasing the Wertkauf and Interspar chains in 1997, Wal-Mart has already changed the way Germany does retail.
Finally the two retailers Wal-Mart bought, the 21-store Wertkauf hypermarket chain in 1997 and, a year later, 74 Interspar hypermarkets from Spar Handels AG, a unit of the French retailing conglomerate Intermarche, were, it was said in retailing circles, overpriced and under-producing stores of wildly diverse sizes, many old and antiquated, linked by no one set of merchandising principles, no one operating system, no common strategy or objectives.
"I remember when, a year after I arrived, we bought the 74-store Interspar chain, a purchase which gave us 95 stores in Germany.
In Germany Ferguson replaced Volker Barth, who had joined Wal-Mart with the Interspar acquisition, with Dr.
Although the company bolstered its presence in the market with the acquisition of 74 Interspar stores the following year, integrating the two chains was initially a challenge.
The company also expands in Europe, which two years ago had just 21 Wal-Mart stores and now has 334 locations, following the acquisitions of 74 Interspar hypermarkets in Germany and the Asda PLC chain in the United Kingdom.