limestone
pronunciation
How to pronounce limestone in British English:
UK [ˈlaɪmstəʊn]
How to pronounce limestone in American English:
US [ˈlaɪmstoʊn]
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- Noun:
- a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
Word Origin
- limestone (n.)
- late 14c., from lime (n.1) + stone (n.).
Example
- 1. The kitchen has white walls and limestone floors .
- 2. Most caves are formed by limestone , a carbonate rock .
- 3. Calcium oxide is made by heating up limestone ( calcium carbonate ) .
- 4. They can be added to portland cement to replace some or all of the limestone .
- 5. Excavation was under way on a new trench , on the other side of a low limestone ridge .