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2017 Word of the Year

blue mud

noun, Geology, Oceanography.
1.
a deep-sea sediment of fine silt and clay that derives its bluish color from organic material and iron sulfide.
Origin of blue mud
1830-1840
An Americanism dating back to 1830-40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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