limestone

noun

lime·​stone ˈlīm-ˌstōn 

: a rock that is formed chiefly by accumulation of organic remains (such as shells or coral), consists mainly of calcium carbonate, is extensively used in building, and yields lime when burned

Examples of limestone in a Sentence

Recent Examples on the Web

Nearby is the visitors center at the Falls of the Ohio, where rapids and limestone formations once stymied riverboat traffic. —Adam Sachs, Condé Nast Traveler, 28 Mar. 2026

By night, enjoy the wavy shoreline and ochre limestone bluffs from your campsite. —Madison Chapman, Outside, 25 Mar. 2026

Brielle, Karri, and Nunu wander among the limestone outcrops and sandstone spires. —William Earl, Variety, 25 Mar. 2026

The project took researchers to 10 different hills across the region known for its karsts, which are limestone cliffs filled with hidden caves and ecosystems, according to a report by Fauna & Flora Cambodia, an organization that led the study alongside the country's ministry of environment. —Emily Mae Czachor, CBS News, 24 Mar. 2026

Word History

First Known Use

14th century, in the meaning defined above

Phrases Containing limestone

• nummulitic limestone

Rhymes for limestone

• acetone
• anglophone
• baritone
• bourguignon
• buspirone
• chaperon
• chaperone
• cobblestone
• collarbone
• cornerstone
• cortisone
• dictaphone

Kids Definition

limestone

noun

lime·​stone ˈlīm-ˌstōn 

: a rock that is formed chiefly from animal remains (as shells or coral), consists mainly of calcium carbonate, is used in building, and gives lime when burned