n. a very widely distributed crystalline form of calcium carbonate, CaCO3, found as limestone, chalk and marble
the GNU version of the Collaborative International Dictionary of English
n. Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble. Called also calc-spar and calcareous spar.
The Century Dictionary and Cyclopedia
n. Native calcium carbonate, or carbonate of lime, one of the commonest of minerals.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone
Word Usage
"The calcite is basically floating in solution around the shell, and it deposits on the shell like a forming crystal."