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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.

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.

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.

spar

2. A bar for fastening a gate or door.
3. A heavy round timber.
4.See brotch.

spar

spar
A principal lateral, span-wise load-carrying member of an airplane or control surface.

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

SPAR

Early system on Datatron 200 series. Listed in CACM 2(5):16 (May 1959).
References in periodicals archive ?
Tsholofelo Chimela, a principal elections officer based in Tonota, who also drummed up support and solicited Spar to come on board to assist the beneficiary after seeing his plight, was elated that Spar assistance had gone beyond just the monthly grocery.
SUPPORT SPAR Scotland CEO Colin McLean with the Scottish FA's Kit Manager David Gibson
In particular, Spar Nord Bank expects that its SIFI status will be an advantage in terms of future capital and funding procurement.
Another customer, Tahani, said, "What makes me very happy is that Spar Oman's organic products have been sourced from a farm in Oman.
Marios Shacolas, CTC chief executive chairman and officer said that the strategic alliance with SPAR will help Ermes maintain market leadership on the island and continue on the path of sustainable growth.
This strategic initiative will make SPAR Oman a pioneer in the entire Middle East region to introduce a voluntary trading model that promotes the cascading the SPAR Global knowledge and learning about store formats and design, supply processes, training, retail software and cost efficiency to entrepreneurs, by the master licensee, SPAR Oman, within the country.
Voucher can be redeemed once against the retail price of PS1 for 80g 4 pack of Cheestrings, when purchased in any SPAR Scotland store (where stocked) and must be presented with the product at the checkout.
SPAR re-entered the Indian market last August following the signing of a partnership agreement with Max Hypermarkets.
"According to a Team Pacquiao insider, the eight-division world champion knocked down spar mate Stan [Martyniouk] last Thursday, indicating his readiness to defend the WBO welterweight crown against Chris Algieri on Nov.
Participating stores in the Daily Post circulation area are: ANGLESEY: SPAR Amlwch, SPAR Beaumaris, SPAR Benllech, SPAR Llangefni, SPAR Valley, SPAR Pentraeth.
As the first food retailer in Al Falah City, Spar Express focuses its range on top-up and convenience shopping, bringing residents a much needed grocery store in the neighbourhood.
SPAR International, targeting the Middle East region for growth in 2014, has added a new partner in the Middle East and North Africa (Mena) region by signing a SPAR License Agreement for Oman with Khimji Ramdas on Monday in Muscat.