from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A white or light-colored mineral, essentially CaMg(CO3)2, used in fertilizer, as a furnace refractory, and as a construction and ceramic material.
- n. A magnesia-rich sedimentary rock resembling limestone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A saline evaporite consisting of a mixed calcium and magnesium carbonate, with the chemical formula CaMg(CO3)2; it also exists as the rock dolostone.
from the GNU version of the Collaborative International Dictionary of English
- n. A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. It includes much of the common white marble. Also called bitter spar.
from The Century Dictionary and Cyclopedia
- n. A native carbonate of calcium and magnesium, occurring as a crystallized mineral, and also on a large scale in white granular crystalline rock-masses, and then often called dolomite marble. The proportions of the carbonates vary from 1:1 to 1:3 or 1:5.
- n. A rock consisting essentially of this mineral.
- n. a stage of the New York series of formations represented by magnesian limestones, constituting a final phase in the Silurian of the Appalachian region. The formation is characterized by its remarkable profusion of merostome crustaceans of the genera Eurypterus, Pterygotus, Eusarcus, etc., and has commonly been known as the Eurypterus beds, corresponding in position to similar fossiliferous beds of Great Britain and the Baltic provinces.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a kind of sedimentary rock resembling marble or limestone but rich in magnesium carbonate
- n. a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer
French, after Déodat de Dolomieu (1750-1801), French geologist.(American Heritage® Dictionary of the English Language, Fourth Edition)
From French dolomite, named after French mineralogist and engineer Déodat de Dolomieu (1750–1801) in 1791. (Wiktionary)