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nouna sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animalstype of:
Definition that contains limestone
- sink a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
- cement a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar
- lime a caustic substance produced by heating limestone
- gibraltar location of a colony of the United Kingdom on a limestone promontory at the southern tip of Spain; strategically important because it can control the entrance of ships into the Mediterranean; one of the Pillars of Hercules
- tripoli a weathered and decomposed siliceous limestone; in powdered form it is used in polishing
- sinkhole a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
- calcite a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone
- stalactite a cylinder of calcium carbonate hanging from the roof of a limestone cave
- chara green algae common in freshwater lakes of limestone districts
- stalagmite a cylinder of calcium carbonate projecting upward from the floor of a limestone cave