English Word · Advanced
calmstone
A sandstone, shale, or mudstone that forms in layers that are easily split into flagstones
Pronunciation: say calmstone
Meaning
A type of sedimentary rock, such as sandstone or shale, that splits easily into thin, flat layers or flagstones.
Example
The mineralogical characters of both sandstone and calmstone are identically the same, as well as the fossil organic remains, which occur so abundantly in the latter.
The mineralogical characters of both sandstone and calmstone are identically the same, as well as the fossil organic remains, which occur so abundantly in the latter.
Practice tips
- Practice calmstone out loud — read the pronunciation guide above and repeat.
- Use it in your own sentence today; reuse beats rereading.
- Pay attention to context: this English word is for advanced-level learners.