Etymology
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dolomite (n.)

rock made of carbonate of calcium and magnesium, 1794, named for French geologist Déodat De Gratet De Dolomieu (1750-1801) who described the rock in his study of the Alps (1791). Dolomites for "mountains of Southern Tyrol" is from 1870. Related: Dolomitic.

updated on September 26, 2018

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Definitions of dolomite from WordNet

dolomite (n.)
a kind of sedimentary rock resembling marble or limestone but rich in magnesium carbonate;
dolomite (n.)
a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer;
Synonyms: bitter spar
From wordnet.princeton.edu, not affiliated with etymonline.