10. 
    coal
    verb supply with coal
    Found op http://wordnetweb.princeton.edu/perl/webwn?s=coal
    
    
11. 
    Coal
    • (n.) A thoroughly charred, and extinguished or still ignited, fragment from wood or other combustible substance; charcoal. • (v. i.) To take in coal; as, the steamer coaled at Southampton. • (v. t.) To mark or delineate with charcoal. • (n.) A black, or brownish black, solid, c...
    Found op http://thinkexist.com/dictionary/meaning/coal/
    
    
12. 
    coal
    solid, usually brown or black, carbon-rich material that most often occurs in stratified sedimentary deposits. It is one of the most important of the ... [65 related articles]
    Found op http://www.britannica.com/eb/a-z/c/101
    
    
13. 
    Coal
    A black or brownish black solid, combustible substance formed by the partial decomposition of vegetable matter without access to air. The rank of coal, which includes anthracite, bituminous coal, subbituminous coal, and lignite, is based on fixed carbon, volatile matter, and heating value. Coal rank...
    Found op http://www.encyclo.co.uk/visitor-contributions.php
    
    
14. 
    Coal
    Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is c...
    Found op http://en.wikipedia.org/wiki/Coal
    
    
15. 
    Coal
    Sedimentary rock composed of the compacted, lithified and altered remains of plants. Coal is a solid, combustible mixture of organic compounds, hydrocarbons, with 30% to 98% carbon by weight, mixed with various amounts of water and small amounts of sulfur and nitrogen compounds. It is formed in seve...
    Found op http://www.physicalgeography.net/physgeoglos/c.html
    
    
16. 
    Coal
    A solid, brittle, more or less distinctly stratified combustible carbonaceous rock, formed by partial to complete decomposition of vegetation; varies in color from dark brown to black; not fusible without decomposition and very insoluble.
    Found op http://www.coaleducation.org/glossary.htm
    
    
17. 
    coal
    The most abundant fossil fuel, derived from prehistoric plant materials that were exposed to high temperatures and pressure.
    Found op http://www.encyclo.co.uk/visitor-contributions.php
    
    
18. 
    coal
    A hard, black mineral burned as a fuel. With its by-products coke and coal tar it is vital to many modern industries. Coal is the compressed remains of tropical and subtropical plants, especially those of the Carboniferous and Permian periods. Changes in the world climatic patterns explain why coal....
    Found op http://www.daviddarling.info/encyclopedia/C/coal.html
    
    
19. 
    coal
    coal, fuel substance of plant origin, largely or almost entirely composed of carbon with varying amounts of mineral matter.Sections in this article:IntroductionTypesFormationNatural Occurrence
    Found op http://www.infoplease.com/ce6/sci/A0812669.html
    
    
20. 
    Coal
    Coal is a solid, opaque, inflammable substance, mainly consisting of carbon, found in the earth, largely employed as fuel, and formed from vast masses of vegetable matter deposited through the luxuriant growth of plants in former epochs of the earth's history. In the varieties of coal in common use ...
    Found op http://www.probertencyclopaedia.com/browse/HC.HTM
    
    
21. 
    coal
    Black or blackish mineral substance formed from the compaction of ancient plant matter in tropical swamp conditions. It is used as a fuel and in the chemical industry. Coal is classified according to the proportion of carbon it contains. The main types are anthracite (shiny, with about 90% carbon......
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015232.html
    
    
22. 
    Coal
    This term covers fossil coal, lignite, coke, agglomerates and recovery products. Fossil coal is the richest in carbon and has a water and volatile matter content lower than lignite. Coal coke is obtained by carbonising fossil coal.
    Found op http://www.insee.fr/en/methodes/default.asp?page=definitions/charbon.htm
    
    

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