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[doh-luh-mahyts, dol-uh-] /ˈdoʊ ləˌmaɪts, ˈdɒl ə-/
noun, (used with a plural verb)
a mountain range in N Italy: a part of the Alps. Highest peak, Marmolada, 10,965 feet (3340 meters).
Also called Dolomite Alps.


[doh-luh-mahyt, dol-uh-] /ˈdoʊ ləˌmaɪt, ˈdɒl ə-/
a very common mineral, calcium magnesium carbonate, CaMg(CO 3) 2 , occurring in crystals and in masses.
a rock consisting essentially or largely of this mineral.
Origin of dolomite
1785-95; < French, named after D. de Dolom(ieu) (1750-1801), French mineralogist; see -ite1
Related forms
[dol-uh-mit-ik] /ˌdɒl əˈmɪt ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for Dolomites
Historical Examples
  • In the Dolomites of Southeast Tyrol; during the summer of 1890.

  • When she had him in the Dolomites … She answered him in the same light tone.

    Black Oxen Gertrude Franklin Horn Atherton
  • I'll be only too glad to spend the honeymoon in the Dolomites, but then I return and go to work.

    Black Oxen Gertrude Franklin Horn Atherton
  • And a month from now they would be in the Dolomites, and she would be his.

    Black Oxen Gertrude Franklin Horn Atherton
  • We were at the end of the railway and at the beginning of the Dolomites.

    Little Rivers Henry van Dyke
  • We can go to the Dolomites for our second honeymoon—we'll have one every year.

    Black Oxen Gertrude Franklin Horn Atherton
  • Thus there are many in Canton Glarus and thereabouts, yet more among the Dolomites and in all the limestone districts.

    The Alps Martin Conway
  • We will not go to Europe at all—except to visit my Dolomites some day.

    Black Oxen Gertrude Franklin Horn Atherton
  • Why we give only resident student scholarships at a young age, and why the out-of-the-way location here in the Dolomites.

    The K-Factor Harry Harrison (AKA Henry Maxwell Dempsey)
  • The Dolomites may be divided into the following groups, running from east to west.

    Tyrol and its People Clive Holland
British Dictionary definitions for Dolomites


plural noun
a mountain range in NE Italy: part of the Alps; formed of dolomitic limestone. Highest peak: Marmolada, 3342 m (10 965 ft)


a white mineral often tinted by impurities, found in sedimentary rocks and veins. It is used in the manufacture of cement and as a building stone (marble). Composition: calcium magnesium carbonate. Formula: CaMg(CO3)2. Crystal structure: hexagonal (rhombohedral)
a sedimentary rock resembling limestone but consisting principally of the mineral dolomite. It is an important source of magnesium and its compounds, and is used as a building material and refractory
Derived Forms
dolomitic (ˌdɒləˈmɪtɪk) adjective
Word Origin
C18: named after Déodat de Dolomieu (1750–1801), French mineralogist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for Dolomites



1794, named for French geologist Déodat De Gratet De Dolomieu (1750-1801) who described the rock in his study of the Alps (1791).

Online Etymology Dictionary, © 2010 Douglas Harper
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Dolomites in Science
  (dō'lə-mīt', dŏl'ə-mīt')   
  1. A gray, pink, or white rhombohedral mineral. Dolomite occurs in curved saddlelike crystals with a pearly to glassy luster. It is a common rock-forming mineral. Chemical formula: CaMg(CO3)2.

  2. A sedimentary rock containing more than 50 percent of the mineral dolomite by weight.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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