calcium carbonate

noun

1. 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

1. 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

1. 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 .

Word History and Origins

Origin of calcium carbonate¹

First recorded in 1870–75

Example Sentences

If and when they starting testing this for real, they should be able to measure more precisely how specks of calcium carbonate or sulfuric acid spread out or clump together—a crucial test of how well these materials might work for geoengineering.

From MIT Technology Review

Another crucial question is how the particles will react with other chemicals in the stratosphere—particularly the calcium carbonate, since it doesn’t occur up there naturally.

From MIT Technology Review

There, the package would release 100 grams to 2 kilograms of calcium carbonate, a common mineral dust, to cover an area about 1 kilometer long by 100 meters in diameter.

From Singularity Hub 

The minerals wash into the ocean, where tiny ocean creatures use the carbon to build their calcium carbonate shells.

From Science News

Over time, these processes should form a mix of loosely bound rock and dirt, mainly composed of magnesium carbonates, bicarbonate, and calcium carbonate, that could simply be left in place, Aines says.

From MIT Technology Review

Using vinegar to break up the calcium carbonate deposits in your coffee maker?

From The Daily Beast

Vide Bodlnder, on the solubility of calcium carbonate, Z. phys.

From Project Gutenberg

Add a very little water to the residue and neutralize the extract with calcium carbonate.

From Project Gutenberg

Aragonite, a mineral formed of calcium carbonate crystallized in the rhombic system; specific gravity 2.94 (compare Calcite).

From Project Gutenberg

Calcium is an element which will unite with oxygen and carbon dioxide to form a compound known as calcium carbonate.

From Project Gutenberg

The substance is calcium carbonate (CaCO3), and contains 56 per cent.

From Project Gutenberg