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psammite
Definitions
[], (Noun)
Definitions:
- Originally: †a fine or smooth-grained sandstone (obsolete). In later use: a sedimentary rock composed of medium-sized particles (commonly defined as those with a diameter between 1/16 mm and either 2 or 4 mm).
Phrases:
Origin
:
early 19th century. From French psammite from ancient Greek ψάμμος sand + French -ite
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definition by Oxford Dictionaries