: 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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The entryway offers glimpses of the limestone façade beyond. Natalie Hoberman, Forbes.com, 27 June 2026 The red brick and limestone structure cuts a stately, purposely demure profile. Tori Latham, Robb Report, 25 June 2026 Workers feed iron ore, coal and limestone into the furnaces’ top and use long sticks to punch open holes for purified molten iron to flow out from the bottom. John Lippert, Chicago Tribune, 28 June 2026 The upper story is covered in wooden clapboards while the ground floor features coquina limestone masonry walls and seashell tabby flooring. Joe Yogerst, CNN Money, 27 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 8 Jul. 2026.

Kids Definition

: 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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