Mudstone
noun ·Rare ·Advanced level
Definitions
- 1 A fine-grained sedimentary rock whose original constituents were clays or muds. countable, uncountable
"The new fossils come from mudstones in central Poland, in beds that have been dated using other, much more common and cosmopolitan, fossils."
Example
More examples"The new fossils come from mudstones in central Poland, in beds that have been dated using other, much more common and cosmopolitan, fossils."
Etymology
From mud + stone.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.