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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

limb
lime
limequat
limestone
limnanthes
limonium
limousine

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.

Cite this Entry

Wordmom. (2026). Definition of Limestone. In Wordmom Dictionary. Retrieved Oct 14, 2026, from https://wordmom.com/dictionary/limestone
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