Siltstone
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A sedimentary rock whose composition is intermediate in grain size between the coarser sandstone and the finer mudstone. countable, uncountable
- 2 a fine-grained sandstone of consolidated silt wordnet
Antonyms
All antonymsEtymology
From silt + stone.
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