dolomite

noun

do·​lo·​mite ˈdō-lə-ˌmīt 

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

ˌdō-lə-ˈmi-tik 

ˌdä-

adjective

Examples of dolomite in a Sentence

Recent Examples on the Web

Research suggests these insects, found in northeastern Illinois and other Midwestern states, require burrows created by Great Plains mudbugs and water flowing over the mineral dolomite, Garrison said. — Finnegan Belleau, Chicago Tribune, 9 Aug. 2026

This architectural marvel, constructed from natural dolomite lime, curves elegantly across a deep gorge and leads straight into a tunnel cut into solid rock. — Taryn White, Travel + Leisure, 4 May 2026

Carbonates, which include calcite, dolomite, aragonite, magnesite, and siderite, are formed by ions of carbon and oxygen dissolved in water that react with metal ions. — New Atlas, 12 July 2025

Yet scientists have failed to grow significant amounts of dolomite in the laboratory. — David Bressan, Forbes.com, 8 Apr. 2025

Word History

Etymology

French, from Déodat de Dolomieu †1801 French geologist

First Known Use

1794, in the meaning defined at sense 1

Rhymes for dolomite

• acolyte
• aconite
• allanite
• alunite
• amberlite
• ammonite
• amorite
• amphitrite
• analyte
• anchorite
• andesite
• anhydrite

Kids Definition

dolomite

noun

do·​lo·​mite ˈdō-lə-ˌmīt 

ˈdäl-ə-

: a mineral found in broad layers as a compact limestone