Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of limestone is as below...

Chalk :: Chalk (n.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as common limestone..

Bavin :: Bavin (n.) Impure limestone.

Atrypa :: Atrypa (n.) A extinct genus of Branchiopoda, very common in Silurian limestones..

Caen Stone :: Caen stone () A cream-colored limestone for building, found near Caen, France..

Peagrit :: Peagrit (n.) A coarse pisolitic limestone. See Pisolite.

Kiln :: Kiln (n.) A large stove or oven; a furnace of brick or stone, or a heated chamber, for the purpose of hardening, burning, or drying anything; as, a kiln for baking or hardening earthen vessels; a kiln for drying grain, meal, lumber, etc.; a kiln for calcining limestone..

Oolite :: Oolite (n.) A variety of limestone, consisting of small round grains, resembling the roe of a fish. It sometimes constitutes extensive beds, as in the European Jurassic. See the Chart of Geology..

Scaglia :: Scaglia (n.) A reddish variety of limestone.

Calcination :: Calcination (n.) The act or process of disintegrating a substance, or rendering it friable by the action of heat, esp. by the expulsion of some volatile matter, as when carbonic and acid is expelled from carbonate of calcium in the burning of limestone in order to make lime..

Cement :: Cement (n.) A kind of calcined limestone, or a calcined mixture of clay and lime, for making mortar which will harden under water..

Lithography :: Lithography (n.) The art or process of putting designs or writing, with a greasy material, on stone, and of producing printed impressions therefrom. The process depends, in the main, upon the antipathy between grease and water, which prevents a printing ink containing oil from adhering to wetted parts of the stone not covered by the design. See Lithographic limestone, under Lithographic..

Dolomite :: Dolomite (n.) A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. It includes much of the common white marble. Also called bitter spar..

Eozoon :: Eozoon (n.) A peculiar structure found in the Archaean limestones of Canada and other regions. By some geologists it is believed to be a species of gigantic Foraminifera, but others consider it a concretion, without organic structure..

Portland Cement :: Portland cement () A cement having the color of the Portland stone of England, made by calcining an artificial mixture of carbonate of lime and clay, or sometimes certain natural limestones or chalky clays. It contains a large proportion of clay, and hardens under water..

Zechstein :: Zechstein (n.) The upper division of the Permian (Dyas) of Europe. The prevailing rock is a magnesian limestone.

Trenton Period :: Trenton period () A subdivision in the lower Silurian system of America; -- so named from Trenton Falls, in New York. The rocks are mostly limestones, and the period is divided into the Trenton, Utica, and Cincinnati epochs. See the Chart of Geology..

Chaetetes :: Chaetetes (n.) A genus of fossil corals, common in the lower Silurian limestones..

Stock :: Stock (n.) An irregular metalliferous mass filling a large cavity in a rock formation, as a stock of lead ore deposited in limestone..

Limekiln :: Limekiln (n.) A kiln or furnace in which limestone or shells are burned and reduced to lime.

Limestone :: Limestone (n.) A rock consisting chiefly of calcium carbonate or carbonate of lime. It sometimes contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble..

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