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

As an Underwater Graveyard, the Great Lakes Have Claimed Close to 10,000 Ships Studying Underwater Sinkholes Underneath Lake Huron is an ancient basin that formed 400 million years ago with dolomite, gypsum, and limestone. —Emilie Le Beau Lucchesi, Discover Magazine, 18 Apr. 2025

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

Named from the Latin word meaning lime, calcium is very common in limestone rocks composed of calcite and dolomite. —David Bressan, Forbes, 31 Dec. 2024

Much of the eco-friendly lodge is crafted from local natural materials such as spruce wood and dolomite stone, including the massive spa complex that stretches across 2,000 square meters and two floors. —Nicole Kliest, Vogue, 10 Mar. 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