Coal

Coal is a combustible mineral formed from organic matter (mostly plant material) that lived about 300 million years ago (during the Pennsylvanian Period ). During the Pennsylvanian Period, the earth was covered with huge swampy forests of giant ferns, horsetails, and club mosses. As layer upon layer of these plants died, they were compressed and co
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coal

[n] - fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period 2. [v] - supply with coal 3. [v] - take in coal, as of a ship
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Coal

A fossil fuel made from the remains of plants.
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Coal

A fossil fuel which is made mostly of carbon. It is formed from plants that grew around 150 million years ago.
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Coal

During Carboniferous period much of world was covered with vegetation growing in swamps. This vegetation died and became submerged under water. As decomposition took place, vegetable matter lost oxygen and hydrogen atoms, leaving a peat deposit with a hig
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Coal

a carbon-rich mineral deposit made of the remains of fossil plant life. It is first deposited as peat, but over time is buried, compressed and heated which changes it physically and chemically. There are different grades of coal depending on the amount of water and gases left inside the deposit, and the percentage of carbon present
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Coal

Coal noun [ Anglo-Saxon col ; akin to Dutch kool , Old High German chol , cholo , German kohle , Icelandic kol , plural, Swedish kol , Danish kul ; confer Sanskrit jval to burn. Confer Kiln , Collier .] 1. A tho
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Coal

Coal transitive verb [ imperfect & past participle Coaled ; present participle & verbal noun Coaling .] 1. To burn to charcoal; to char. [ R.] « Charcoal of roots, coaled into great pieces. Bacon. »
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Coal

Coal intransitive verb To take in coal; as, the steamer coaled at Southampton.
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coal

A natural fuel formed by partial decomposition of vegetable matter under certain environmental conditions. ... (12 Dec 1998) ...
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coal

noun fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
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coal

verb take in coal; `The big ship coaled`
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coal

verb supply with coal
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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, combustible substance, dug from beds or veins in th
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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]
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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 indicates the progressive alt...
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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 composed primarily of carbon along with variable qu
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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 several stages as the remains of plants are subjected
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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.
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coal

The most abundant fossil fuel, derived from prehistoric plant materials that were exposed to high temperatures and pressure.
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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...
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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
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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 the combined effects of pressure, heat, and chemic
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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......
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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.
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