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Definition of limestone

limestone

/ˈlaɪm.stoʊn/
lime · stone
Plural:limestones
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limestone Lexical Profile

limestone Game Scores & Validity

• noun

1

A hard sedimentary rock composed primarily of calcium carbonate or dolomite, widely used as a building material, in agriculture, and in the manufacture of cement.

Example

"The spectacular underground cave systems were formed over millions of years as water dissolved the porous limestone."

Synonyms
View all synonyms for limestone

• Nearby Words

limequat
limerick
limescale
limestone
limestone falls
limit
limitation

Word Origin & Etymology

From Middle English 'lymston', a compound of 'lym' (lime, referring to calcium oxide) and 'ston' (stone), reflecting its ancient use as the primary raw material for producing quicklime.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Limestone. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/limestone
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