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limestone
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As a noun, limestone means an abundant rock of marine and fresh-water sediments.
Meanings of limestone
3 meaningsnoun
An abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO3); it occurs in a variety of forms, both crystalline and amorphous.
attributivePertaining to or made of limestone.
“a limestone viaduct”
A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).
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