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WORDNET DICTIONARY
CIDE DICTIONARY
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WORDNET DICTIONARY
Noun Greensand has 1 sense
CIDE DICTIONARY
Greensand, n.
A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime. [1913 Webster]
" Greensand is often called marl , because it is a useful fertilizer. The greensand beds of the American Cretaceous belong mostly to the Upper Cretaceous."
[1913 Webster]
OXFORD DICTIONARY
Greensand, n.
1 a greenish kind of sandstone, often imperfectly cemented.
2 a stratum largely formed of this sandstone.
1 a greenish kind of sandstone, often imperfectly cemented.
2 a stratum largely formed of this sandstone.