dolomite

noun

do·​lo·​mite ˈdō-lə-ˌmīt How to pronounce dolomite (audio)
ˈdä-
1
: a mineral CaMg(CO3)2 consisting of a calcium magnesium carbonate found in crystals and in extensive beds as a compact limestone
2
: a limestone or marble rich in magnesium carbonate
dolomitic adjective

Word History

Etymology

French, from Déodat de Dolomieu †1801 French geologist

First Known Use

1794, in the meaning defined at sense 1

Time Traveler
The first known use of dolomite was in 1794

Browse Nearby Words

Cite this Entry

“Dolomite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dolomite. Accessed 10 Sep. 2025.

Kids Definition

dolomite

noun
do·​lo·​mite ˈdō-lə-ˌmīt How to pronounce dolomite (audio)
ˈdäl-ə-
: a mineral found in broad layers as a compact limestone

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