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sapropel

[sap-ruh-pel] /ˈsæp rəˌpɛl/
noun
1.
mud consisting chiefly of decomposed organic matter formed at the bottom of a stagnant sea or lake.
Origin of sapropel
1905-1910
1905-10; sapro- + -pel < Greek pēlós mud
Related forms
sapropelic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for sapropel

sapropel

/ˈsæprəˌpɛl/
noun
1.
an unconsolidated sludge consisting of the decomposed remains of aquatic organisms, esp algae, that accumulates at the bottoms of lakes and oceans
Derived Forms
sapropelic, adjective
Word Origin
C20: from sapro- + -pel from Greek pēlos mud
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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sapropel in Science
sapropel
  (sāp'rə-pěl')   
An unconsolidated ooze consisting mainly of putrefied plant remains and found in anaerobic areas at the bottom of swamps, lakes, and shallow seas.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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