calcium carbonate

noun

a white, crystalline, water-insoluble, tasteless powder, CaCO 3 , occurring in nature in various forms, as calcite, chalk, and limestone: used chiefly in dentifrices and polishes and in the manufacture of lime and cement.

calcium carbonate

noun

a white crystalline salt occurring in limestone, chalk, marble, calcite, coral, and pearl: used in the production of lime and cement. Formula: CaCO 3

calcium carbonate

A white or colorless crystalline compound occurring naturally in chalk, limestone, and marble and in the minerals calcite and aragonite. It is used to make toothpaste, white paint, and cleaning powder. Chemical formula: CaCO ₃ .

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Word History and Origins

Origin of calcium carbonate¹

First recorded in 1870–75

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Example Sentences

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Some crustaceans, for example, have a hard time developing hard outer shells made of calcium carbonate if the water is too acidic.

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Heart cockles and many other marine animals use a special form of calcium carbonate called aragonite to make their shells.

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To find a solution, lead researcher Hidekazu Yoshida of the Nagoya University Museum turned to his expertise in fossil preservation in calcium carbonate concretions.

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Corals, which are small invertebrates that tend to dwell in expansive colonies, ingest the SCP pollutants from the surrounding waters, incorporating them as they grow their calcium carbonate skeletons.

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The lower the polymer content and the higher the water content, the less well the calcium carbonate crystals adhere to the surface.

From

calcium carbide calcium channel blocker

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