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Word of the Day Tuesday, June 9, 2026

mudstone

/ˈmʌdstoʊn/ noun · British & US
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What does mudstone mean?

noun

A type of fine-grained sedimentary rock that is composed of clay and silt, often with a high content of water. It is typically grey or greenish in color and has a smooth, earthy texture.

Example

"The geologist studied the mudstone formation in the ancient riverbed."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for mudstone

Antonyms of mudstone

Rhymes with mudstone

Etymologically related