limestone
/ˈlaɪmˌstoʊn/
Proposed by a contributor, not yet supported by evidence.
Also seen as: limestones
Meaning · English
An abundant rock of marine and freshwater sediments; primarily composed of calcite (CaCO₃); and occurring in a variety of forms, both crystalline and amorphous.
Noun
Examples
a limestone viaduct
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “limestone” mean?
An abundant rock of marine and freshwater sediments; primarily composed of calcite (CaCO₃); and occurring in a variety of forms, both crystalline and amorphous.
Is “limestone” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.