sludge
Use Sludge in a sentence
noun
1.
mud, mire, or ooze; slush.
2.
a deposit of ooze at the bottom of a body of water.
3.
any of various more or less mudlike deposits or mixtures.
4.
the sediment in a steam boiler or water tank.
5.
broken ice, as on the sea.
6.
a mixture of some finely powdered substance and water.
7.
sediment deposited during the treatment of sewage.
8.
Also called activated sludge. Bacteriology. sewage sediment that contains a heavy growth of microorganisms, resulting from vigorous aeration.
9.
a fine, mudlike powder produced by a mining drill.
Origin:
1640–50; variant of dial. slutch, slitch, Middle English slich slime, wet mud (compare its derivative slucched muddy); apparently of expressive orig.
1640–50; variant of dial. slutch, slitch, Middle English slich slime, wet mud (compare its derivative slucched muddy); apparently of expressive orig.
Related forms
de-sludge, verb (used with object), de-sludged, de-sludg·ing.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
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Link To sludge
00:10
Sludge
is always a great word to know.
So is zedonk. Does it mean:
| a gadget; dingus; thingumbob. |
| the offspring of a zebra and a donkey. |
Collins
World English Dictionary
sludge (slʌdʒ) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| 1. | soft mud, snow, etc |
| 2. | any deposit or sediment |
| 3. | a surface layer of ice that has a slushy appearance |
| 4. | (in sewage disposal) the solid constituents of sewage that precipitate during treatment and are removed for subsequent purification |
| [C17: probably related to | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
sludge
1649, possibly from M.E. slutch "mud, mire," or a variant of slush.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The anti-foaming additive breaks down and you start to get water mixing with the oil and making sludge.
Finally, some organic fertilizers contain sewage sludge, leftover from wastewater treatment plants.
Sludge landfills proposed as part of a private wastewater treatment facility plans undergo a comparable review procedure.
Blood begins to sludge, and no-blood-flow regions spring up all over the body.
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