Definition of limestone
: 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
Recent Examples of limestone from the Web
Florida is highly prone to naturally occurring sinkholes because there are caverns below ground of limestone, a porous rock that easily dissolves in water.
A 25,000-year-old limestone carving discovered in a rock shelter in France depicts a pregnant woman holding what appears to be a bison horn with the swoop of a crescent moon and 13 small notches—a possible paean to reproductive and lunar cycles.
It is made of limestone slabs up to 19 feet tall and weighing 20 tons.
The earliest representations of cats depict a working animal, like the rat hunter in the limestone tomb.
Like Bermuda's corrugated limestone rooftops—built by the earliest inhabitants to collect rainwater when faced with a dearth of fresh water sources—these circular gateways, called moongates, have become synonymous with Bermudian architecture.
There are four dens on the site, each connected by a limestone trail that covers about 2 miles.
Crushed limestone trail (1.4 miles) open regular preserve hours after August 15.
The area where the North Vietnamese Army’s supply route ran through central Laos is a landscape of leafy valleys bordered by domed limestone mountains.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'limestone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of limestone
LIMESTONE Defined for English Language Learners
Definition of limestone for English Language Learners
: a type of white stone that is commonly used in building
LIMESTONE Defined for Kids
Definition of limestone for Students
: a rock formed chiefly from animal remains (as shells or coral) that is used in building and gives lime when burned
Seen and Heard
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