limestone

noun

lime·​stone ˈlīm-ˌstōn How to pronounce limestone (audio)
: 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
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Most road trips on the list also feature signature landmarks, such as the stunning Cliffs of Moher in Ireland and the Twelve Apostles limestone stacks in Australia. Dobrina Zhekova, Travel + Leisure, 23 June 2026 Situated in western Canada’s Alberta province, a tapestry of the Rocky Mountains serves as the backdrop across this wild frontier of limestone giants and ancient glaciers. Kristin Braswell, USA Today, 22 June 2026 The floors were laid with black-and-white limestone tiles. Maria Mocerino, Interesting Engineering, 20 June 2026 The special thing about Altamira is its limestone, a soil type that is very unusual in Mendoza. Forbes.com, 20 June 2026 See All Example Sentences for limestone

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of limestone was in the 14th century

Cite this Entry

“Limestone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/limestone. Accessed 24 Jun. 2026.

Kids Definition

limestone

noun
lime·​stone ˈlīm-ˌstōn How to pronounce limestone (audio)
: 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

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