from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A common crystalline form of natural calcium carbonate, CaCO3, that is the basic constituent of limestone, marble, and chalk. Also called calcspar.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a very widely distributed crystalline form of calcium carbonate, CaCO3, found as limestone, chalk and marble
from 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.
from The Century Dictionary and Cyclopedia
- n. Native calcium carbonate, or carbonate of lime, one of the commonest of minerals.
from 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
Sorry, no etymologies found.